67486 + Interview Questions in Secondary School in Physics

1.	Imp I am P questions of lesson number 6 refraction of light state board Maharashtra
Answer» hhggfgggvvvvvvvvjjj ggffff

Discussion

2.	A cricket ball is deopped from a height of 20 meters the time it takes to fall through this height is
Answer» 2 secExplanation:s =ut+1/2 a t2 s=20 m and U =0 then, s=1/2 AT2 and t = √(2s/a)= 2 sec

Discussion

3.	Why photons bend near black hole if they are massless and force of gravity on them must be zero?
Answer» During the PHOTON is falling in the gravitational field, its ENERGY (MASS) increases. ACCORDING to W=dmc^2, Thanks for the question. Hope it HELPS you.

Discussion

4.	Name a two device which convert sound energy into magnetic energy.
Answer» 1.electromechanical2.microphoneExplanation: FOLLOW me

Discussion

5.	If tanA = CotB Prove that A+B=90°
Answer» TAN A=COT BCot (90-A)=cot B 90-A=B 90=A+B

Discussion

6.	The velocity of a particle varies with time t as v=a+b/t+c, where a,b,care constants , the dimensional formula for a is
Answer» 1S^-1] is the DIMENSION FORMULA for a

Discussion

7.	This is the question... answer faster... pls
Answer» given,u = 0v = 40 KM/hrs t = 10 MINS = 0.16666667 hrsto find,a = ?FORMULA,a = V - u / tsolution,a = 40 km - 0 km / 0.16666667hrsa = 40/0.16666667a = 239.999952Explanation:

Discussion

8.	Sport cars, aeroplane and boat are designed to have a streamlined shape
Answer» TION:because of fictionstreamlined SHAPE is MADE to AVOID FRICTION

Discussion

9.	In a maximum deviation position of an equilateral prism, angle of deviation is 30 degree. What are angle of incidence and angle of refraction
Answer» EXPLANATION:The ANGLE of INCIDENCE is 15 DEGREE.

Discussion

10.	Sides of a rectangle is 1%. The error in the measurement of its area is(A) 1% (B) 1/2%(C) 2% (D) None of the above.Light year is a unit of(A) Time(B) Mass(C) Distance (D) Luminosityii):)Dimaning of linatiaanar1.
Answer» LIGHT YEAR is a UNIT of distancehope this ANSWER will help uou

Discussion

11.	Find velocity of particle after 100m
Answer» VELOCITY is 2000m/s ...when initial velocity is zero N ACCELERATION is taken 10...hope it helps!!!

Discussion

12.	The velocity time graph of mass 50g moving in a definite direction
Answer» a) 2m/sb) 0.1 kgm/sc) The SLOPE of the GRAPH represents accelaration d) Distance is 16 mExplanation: a) VELOCITY = Displacement / time = ie already given as 2m/sb) m x v = 50/1000 = 0.05kgx2 =0.1 kgm/sd) dx/dt = v dx= VDT Integrate both sides x = v [t^2/2] X = 2 [ 16/2] X= 2 x 8 = 16 m

Discussion

13.	What is the difference between methane and cfc gas
Answer» TION:◆The chemical FORMULA of methane isCH4 whereas cfc is CF2H2.◆The boiling point of methane is -161℃whereas cfc is -128℃◆Methane is a natural gas whereas CTC is DERIVATIVE of methane.

Discussion

14.	Upto which length current flows through water
Answer» If you drop a plugged in toaster into a bathtub full of water it can be deadly. But how far can the ELECTRICITY TRAVEL? If I dropped a toaster in the ocean it wouldn't electrify the ENTIRETY of the ocean so I was WONDERING how you determine how far electric current can travel through water. Im also assuming Salt water would be different to fresh water.

Discussion

15.	110 volt toaster oven draws a current of 6 ampere on highest sitting acid converts is electrical energy into thermal energy the toasters maximum power rating is
Answer» POWER of TOASTER is 660 WATTS

Discussion

16.	A body of mass 1 kg starts moving from rest at t= 0, in a circular path of radius 8 m. Its kinetic energy varies as a function of time as : K.E. = 2t2 Joules, where t is in seconds. ThenA tangential acceleration = 4 m/s2(B) power of all forces at t = 2 sec is 8 watt(C) first round is completed in 2 sec.(D) tangential force at t = 2 sec is 4 newton.
Answer» body of mass 1 kg STARTS moving from rest at t= 0, in a circular path of radius 8 m. Its kinetic energy VARIES as a function of time as : K.E. = 2t² J.To find:Correct Option among the above ?Calculation:So, TANGENTIAL acceleration will ALWAYS be 2 m/s².So, first round is completed in 4√π SEC.

Discussion

17.	Give one example of law of conservation of energy
Answer» electricity in our houses can help in the GLOWING bulbs and USED to operate the appliances in our house for EXAMPLE glow bulb ELECTRICAL energy is converted into LIGHT energy and some heat energy so I can say that life can neither be created nor be destroyed

Discussion

18.	A passenger in a bus tends to fall backward when it starts suddenly. give reasons
Answer» When the bus starts SUDDENLY, then, the LOWER part of body starts being in motion because it is in touch of bus in motion, while the upper part of body TRIES to be at rest for sometime, because of inertia at rest. this is why, PASSENGERS tends to fall backwards when it starts suddenly

Discussion

19.	Is it possible when an object moves with acceleration but with uniform speed
Answer» not POSSIBLE for an OBJECT with acceleration to MOVE with UNIFORM speed.

Discussion

20.	Uses of ,4Rprinciple
Answer» s Reduce, Reuse, Recycle and Restore. Reduce- We must reduce the use of RESOURCES as much as possible and save them for the future generation. Reducing the usage is a method of conservation of resources. It is IMPORTANT to reduce, reuse and recycle for several REASONS: - We reduce in order to save resources because they are not endless. - We reuse because mankind NEEDS to use a lot of ENERGY and resources to produce the materials we need.

Discussion

21.	Find the velocity at which mass of a proton becomes 1.1 times its rest mass, mp = 1.6 x 10⁻²⁷ kg. Also, calculate corresponding temperature. For simplicity, consider a proton as non-interacting ideal-gas particle at 1 atm pressure.[c = 3 x 10⁸ ms⁻¹ , kB = 1.38 x 10⁻²³ SI]
Answer» VELOCITY = 1.24*10^8 m/s and TEMPERATURE is 4830.2 KELVIN. EXPLANATION:

Discussion

22.	Output power of He-Ne LASER of low energy is 1.00 mW. Wavelength of the light is 632.8 nm. What will be the number of photons emitted per second from this LASER ? h = 6.25 x 10⁻³⁴ J s.
Answer» can't UNDERSTAND INFORMATION INSUFFICIENT

Discussion

23.	Power produced by a star is 4 x 10²⁸ W. If the average wavelength of the emitted radiations is considered to be 4500 A°, find the number of photons emitted in 1 s.
Answer» No of PHOTON EMITTED is 1*10^41

Discussion

24.	An electric bulb of 100 W converts 3% of electrical energy into light energy. If the wavelength of light emitted is 6625 A°, find the number of photons emitted is 1 s. h = 6.625 x 10⁻³⁴ J s.
Answer» No of PHOTON EMITTED IS1*10^13

Discussion

25.	Calculate the energy of photon in eV for a radiation of wavelength 5000 A° ?
Answer» lamda =h/√2mE Explanation:lamda =wave length h=plank CONSTANT m = MASS of ELECTRON then ➗ the ans by CHARGE of electron

Discussion

26.	A particle Travels the first half of its Total distance along a straight line with a speed V kilometre per hour then next half with a speed of 60 km per hour the average speed for the total journey is 40 kilometre per hour then value of v is
Answer» 20 km/hrExplanation:AVERAGE SPEED= (v+60)/240=(v+60)/280-60=vv=20km/hr

Discussion

27.	Newton's Laws 1. The distance x covered in time t by a bodyhaving initial velocity vo and having a constantacceleration a is given byx = Vot+at?This result follows from (N.C.E.R.T. 1980)(1) Newton's first law(2) Newton's second law(3) Newton's third law(4) none of these three
Answer» none of these are the 4 ONE PLEASE mark me BRAIN LEAST

Discussion

28.	Explain why a bicycle stops if we stop pedalling
Answer» Explanation:A cyclist riding ALONG a road does not come to rest immediately after he stop pedalling. The BICYCLE CONTINUE to move forward due to the INERTIA of motion. But eventually it comes to rest as a RESULT of the retarding action of friction.

Discussion

29.	4. A block of mass 5 kg initially at rest at theorigin is acted upon by a force along thepositive X - direction represented byF=(20 +5x)N. Calculate the work done by theforce during the displacement of the blockfrom x=0 to x=4m.
Answer» 120 jouleExplanation:we KNOW smaller work DONE,DW=F.dsas force and displacement are in same direction so angle is 0 degree now dw= integration of Fds from x=0 to x=4we get w= (20x+5xsquare/2) from x=0 to x=4substituting value of x we get , W= 120 JOULE

Discussion

30.	s=ut+1/2 at×t v=√u×u+2as v=u+at find displacement of a particle after 10s starting from the rest with a uniform acceleration of 2m/s×s
Answer» 100mExplanation:USE 2EQUATION of MOTION

Discussion

31.	Differences between velocity and speed?
Answer» s the displacement covered per UNIT time.☑️ It is a vector quantity.☑️ It MAY be ZERO.☑️ It is the distance covered per unit time.☑️ It is a scaler quantity.☑️ It can never be zero.

Discussion

32.	A stone is dropped from the top of a tall cliff and n seconds later another stone is thrown vertically downwards with a velocity u. Then the second stone overtakes the first, below the top of the cliff at a distance given by
Answer» 19CM i THINK it is so is not it

Discussion

33.	State the postulates of kinetic theory of matter
Answer» contain large number of tiny and DISCRETE particles called molecules 2)Gas molecules are very much apart from each other 3)The molecules move randomly in all directions with high velocities 4)The collisions between gas molecules of perfectly elastic 5)pressure exerted by a gas is DUE to collisions of molecules made on the walls of the vessel 6)KE is directly proportional to the temperature 7)Molecules are ELECTRICALLY Netural and do not have attractions or repulsions between them 8)Molecular MOTIONS are unaffected by gravity#Fuhrer

Discussion

34.	A motorcycle and a car start from rest from the same place at the same time and travel in the same direction. The motorcycle accelerates at 1.0 m/s^2 up to a speed of 36 km/h and the car at 0.5 m/s^2 up to a speed of 54 km/h .The time at which the car would overtakethe motorcycle is
Answer» car will overtake bike after 35 secExplanation:The distance from starting point, where bike reaches it final speed 10 m/s is given by V2 = 2×a×S ; hence S = v2/(2a) = 100/2 = 50 m TIME t1 for the bike to reach final velocity = v/a = 10/1 = 10 s. The distance from starting point, where car reaches it final speed 15m/s is given by v2 = 2×a×S ; hence S = v2/(2a) = 225/(2×0.5) = 225 m ................................(1) Time t2 for the car to reach final velocity = v/a = 15/0.5 = 30 s. In this 30 s duration of car travel, distance travelled by bike = Initial 50 m in 10 s + distance travelled in 20 s with uniform speed 10 m/s = 50 + 20×100 = 250 m ............................(2) From (1) and (2), we know that after 30 s the distance between car and bike = 25 m. After 30 s , both bike and car are moving with uniform speed. Car speed is 15 m/s and bike speed is 10 m/s. hence additional time to cover this 25 m gap = 25/(15-10) = 5 s. total time is 30+5 = 35 s. Car will overtake bike after 35 s

Discussion

35.	Two blocks of masses 2kg and 4 kg are connected by a light string passing over a light smooth Pulley clamp to the edge of a horizontal table that 2 kg block is on the smooth horizontal table and the other block is hanging vertically find the acceleration of the system if it is released from the rest and find the tension in the string
Answer» TENSION is 40/3 N. EXPLANATION:

Discussion

36.	Pls answer the 26 question
Answer» re is your ANSWER MATE... 125 m...................... . ..... ... .... .... ..... .

Discussion

37.	Which physical quantity can be infered from the knowledge of shopping potential ?
Answer» LD FREQUENCY of the MATERIAL IRRADIATED

Discussion

38.	What is the shortest definition for emf?
Answer» The potential difference in a OPEN circuit along the TWO ends of the ELECTRODES of a BATTERY is TERMED as e.m.f

Discussion

39.	If the momentum of an electron is required to be same as that of wave of 5200 A° wavelength, its velocity should be __________ m S⁻¹. (A) 10³ (B) 1.2 x 10³ (C) 1.4 x 10³ (D) 2.8 x 10³
Answer» Option (C) is CORRECT.Explanation:According to the de Broglie hypothesis, the wavelength and the momentum of the WAVE associated with all the PARTICLES are related as .where, = wavelength. = PLANCK's CONSTANT = . = momentum = . = mass of the particle. = velocity with which it is moving..Given, .We know, mass of an electron, .Using the de Broglie hypothesis,Thus, the option (C) is correct.

Discussion

40.	Photons of energy 1 eV and 2.5 eV successively illuminate a metal whose work function is 0.5 eV, The ratio of maximum speed of emitted electron is (A) 1 : 2 (B) 2 : 1 (C) 3 : 1 (D) 1: 3
Answer» udent,◆ ANSWER -(A) 1 : 2 ● EXPLANATION -For 1ST photon,KE1 = hν1 - Φmv1²/2 = hν1 - Φmv1²/2 = 1 - 0.5v1² = 0.5 × 2/mv1² = 1/mv1 = 1/√mFor 2nd photon,KE2 = hν1 - Φmv2²/2 = hν1 - Φmv2²/2 = 2.5 - 0.5v2² = 2 × 2/mv2² = 4/mv2 = 2/√mRatio of MAXIMUM speeds is -v1/v2 = (1/√m) / (2/√m)v1/v2 = 1/2Therefore, ratio of maximum speeds is 1 : 2.Hope this helps you...

Discussion

41.	Cathode rays travelling in the direction from east to west enter in an electric field directed from north to south. They will deflect in _________ .(A) east (B) west (C) south (D) north
Answer» (B) southExplanation:The REASON is that the cathode rays are negatively charged and will deflect TOWARDS the SOUTH

Discussion

42.	A solid ball rolls down a parabolic path ABC from a height h as shown in figure. portion AB of the path is rough while BC is smooth .How high will the ball climb in BC.
Answer» total kinetic energy = mghHere,m = mass of ballThe RATIO of ROTATIONAL to kinetic energy would be ,Kr/Kt = 2/5where, Kr = 2/7mghand Kt = 5/7 mghIn portion BC, friction is absent . Therefore, rotational K.E will remain constant and Translational K.E will convert into potential energy. Hence, if H be the HEIGHT to which ball climbs in BC, thenmgH = KtmgH = 5/7mghH = 5/7hhappy to HELP !:)

Discussion

43.	A=3i+2j+3k B=2i+3j के बीच का कोण ज्ञात करो
Answer» tion:HOPE it will be HELPFUL for u...thanks ❤❤marks me as a BRAINLIEST, if u SATISFY with my answer....

Discussion

44.	A car acquires a velocity of 72 km/h in 10s starting from rest. Find (a) accleration (b) distance travelled (c) average velocity
Answer» Explanation:Given that:-Initial velocity (u) = 0Final velocity = 72km/h= 20m/sTime TAKEN (t) = 10sa) acceleration =(v-u)/t=(20-0)/10= 2m/s^2b) average velocity = (v+u)/2=(20+0)/2=20/2=10m/sc) let distance be sUsing second equation of motion =ut+(1/2)at^2= (0)(10)+(1/2)(2)(10)^2= 0+100= 100So, the distance covered by the body was 100m.please mark my ANSWER as the brainliest

Discussion

45.	A village has a circular wall around it, and the wall has four gates pointing north, south, east and west. A tree stands outside the village. 16 m north of the north gate, and it can be justseen appearing on the horizon from a point 48 m east of the south gate. What is the diameter,in meters, of the wall that surrounds the village?
Answer» Diameter of Wall = 48 mExplanation:A village has a circular wall Let say Diameter of Wall = 2RThen Radius = RLet say Tree is at G = 16 m North Of North Gate NG = 16 m& point of Observation = P 48m east of the south gate PS = 48mPS is Tangentnow Tree appearing on the horizon so Let say PQ WOULD be Tangent which on extend goes upto GPQ = PS = 48 ( equal Tangent)Let say O is CENTER of wallthen OG² = QG² + OQ²OQ = Radius = Rlet say QG = XOG = R + 16(R + 16)² = X² + R² => X² = 32R + 256=> X² = 32(R + 8) - eq 1in ΔPSGPG² = PS² + SG²=> (48 + X)² = 48² + (2R + 16)²=> 48² + X² + 96X = 48² + 4R² + 256 + 64R=> 32R + 256 + 96X = 4R² + 256 + 64R=> 96X = 4R² + 32R=> 24X = R² + 8R=> 24X = R(R + 8) Squaring both Sides=> 24²X² = R²(R + 8)²R²(R + 8)² = 24² * 32(R + 8)=> R² (R + 8) = 24² * (24 + 8)=> R = 24Diameter of Wall = 2R = 2 * 24 = 48 mDiameter of Wall = 48 m

Discussion

46.	The components of the velocity of a particle are given by (4t-2) ms' and (4t2-1) ms along x-axis and y-axis respectively. Calculate (i) theaverage acceleration of the particle during the timeinterval fromt=1 to t=2s and (ii) accelerationof the particle at t=1.2 s.
Answer» TION:ANSWER is in ATTACHMENT

Discussion

47.	See the image below.i need the exact answer
Answer» 2Refer the IMAGE for EXPLANATION.

Discussion

48.	What is the escape velocity of Chandrayaan 2 ?(along with the steps)
Answer» FIND your ANSWER by USING GOOGLE

Discussion

49.	A body moving along straight line covers a distance in three equal parts with speed 2 m/s, 3 m/s and4 m/s, then its average speed is
Answer» at helps✌️☺️

Discussion

50.	if an object in motion experiences a net zero unbalanced force,the body a. will always remain at rest b. moves with a constant velocity c. can be accelerated cannot remain at rest
Answer» Zero unbalanced force MEANS the body is not ACCELERATING but it MOVES with a CONSTANT VELOCITY.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Imp I am P questions of lesson number 6 refraction of light state board Maharashtra

A cricket ball is deopped from a height of 20 meters the time it takes to fall through this height is

Why photons bend near black hole if they are massless and force of gravity on them must be zero?

Name a two device which convert sound energy into magnetic energy.

If tanA = CotB Prove that A+B=90°

The velocity of a particle varies with time t as v=a+b/t+c, where a,b,care constants , the dimensional formula for a is

This is the question... answer faster... pls​

Sport cars, aeroplane and boat are designed to have a streamlined shape​

In a maximum deviation position of an equilateral prism, angle of deviation is 30 degree. What are angle of incidence and angle of refraction ​

Sides of a rectangle is 1%. The error in the measurement of its area is(A) 1% (B) 1/2%(C) 2% (D) None of the above.Light year is a unit of(A) Time(B) Mass(C) Distance (D) Luminosityii):)Dimaning of linatiaanar1.​

Find velocity of particle after 100m​

The velocity time graph of mass 50g moving in a definite direction ​

What is the difference between methane and cfc gas ​

Upto which length current flows through water​

110 volt toaster oven draws a current of 6 ampere on highest sitting acid converts is electrical energy into thermal energy the toasters maximum power rating is​

Give one example of law of conservation of energy​

A passenger in a bus tends to fall backward when it starts suddenly. give reasons​

Is it possible when an object moves with acceleration but with uniform speed

Uses of ,4Rprinciple​

Find the velocity at which mass of a proton becomes 1.1 times its rest mass, mp = 1.6 x 10⁻²⁷ kg. Also, calculate corresponding temperature. For simplicity, consider a proton as non-interacting ideal-gas particle at 1 atm pressure.[c = 3 x 10⁸ ms⁻¹ , kB = 1.38 x 10⁻²³ SI]

Output power of He-Ne LASER of low energy is 1.00 mW. Wavelength of the light is 632.8 nm. What will be the number of photons emitted per second from this LASER ? h = 6.25 x 10⁻³⁴ J s.

Power produced by a star is 4 x 10²⁸ W. If the average wavelength of the emitted radiations is considered to be 4500 A°, find the number of photons emitted in 1 s.

An electric bulb of 100 W converts 3% of electrical energy into light energy. If the wavelength of light emitted is 6625 A°, find the number of photons emitted is 1 s. h = 6.625 x 10⁻³⁴ J s.

Calculate the energy of photon in eV for a radiation of wavelength 5000 A° ?

A particle Travels the first half of its Total distance along a straight line with a speed V kilometre per hour then next half with a speed of 60 km per hour the average speed for the total journey is 40 kilometre per hour then value of v is​

Newton's Laws 1. The distance x covered in time t by a bodyhaving initial velocity vo and having a constantacceleration a is given byx = Vot+at?This result follows from (N.C.E.R.T. 1980)(1) Newton's first law(2) Newton's second law(3) Newton's third law(4) none of these three​

Explain why a bicycle stops if we stop pedalling​

4. A block of mass 5 kg initially at rest at theorigin is acted upon by a force along thepositive X - direction represented byF=(20 +5x)N. Calculate the work done by theforce during the displacement of the blockfrom x=0 to x=4m.​

s=ut+1/2 at×t v=√u×u+2as v=u+at find displacement of a particle after 10s starting from the rest with a uniform acceleration of 2m/s×s​

Differences between velocity and speed?

A stone is dropped from the top of a tall cliff and n seconds later another stone is thrown vertically downwards with a velocity u. Then the second stone overtakes the first, below the top of the cliff at a distance given by​

State the postulates of kinetic theory of matter

A motorcycle and a car start from rest from the same place at the same time and travel in the same direction. The motorcycle accelerates at 1.0 m/s^2 up to a speed of 36 km/h and the car at 0.5 m/s^2 up to a speed of 54 km/h .The time at which the car would overtakethe motorcycle is​

Pls answer the 26 question

Which physical quantity can be infered from the knowledge of shopping potential ?

What is the shortest definition for emf?

If the momentum of an electron is required to be same as that of wave of 5200 A° wavelength, its velocity should be __________ m S⁻¹. (A) 10³ (B) 1.2 x 10³ (C) 1.4 x 10³ (D) 2.8 x 10³

Photons of energy 1 eV and 2.5 eV successively illuminate a metal whose work function is 0.5 eV, The ratio of maximum speed of emitted electron is (A) 1 : 2 (B) 2 : 1 (C) 3 : 1 (D) 1: 3

Cathode rays travelling in the direction from east to west enter in an electric field directed from north to south. They will deflect in _________ .(A) east (B) west (C) south (D) north

A solid ball rolls down a parabolic path ABC from a height h as shown in figure. portion AB of the path is rough while BC is smooth .How high will the ball climb in BC.

A=3i+2j+3k B=2i+3j के बीच का कोण ज्ञात करो​

A car acquires a velocity of 72 km/h in 10s starting from rest. Find (a) accleration (b) distance travelled (c) average velocity​

The components of the velocity of a particle are given by (4t-2) ms' and (4t2-1) ms along x-axis and y-axis respectively. Calculate (i) theaverage acceleration of the particle during the timeinterval fromt=1 to t=2s and (ii) accelerationof the particle at t=1.2 s.​

See the image below.i need the exact answer

What is the escape velocity of Chandrayaan 2 ?(along with the steps)

A body moving along straight line covers a distance in three equal parts with speed 2 m/s, 3 m/s and4 m/s, then its average speed is​

if an object in motion experiences a net zero unbalanced force,the body a. will always remain at rest b. moves with a constant velocity c. can be accelerated cannot remain at rest

This is the question... answer faster... pls

Sport cars, aeroplane and boat are designed to have a streamlined shape

In a maximum deviation position of an equilateral prism, angle of deviation is 30 degree. What are angle of incidence and angle of refraction

Sides of a rectangle is 1%. The error in the measurement of its area is(A) 1% (B) 1/2%(C) 2% (D) None of the above.Light year is a unit of(A) Time(B) Mass(C) Distance (D) Luminosityii):)Dimaning of linatiaanar1.

Find velocity of particle after 100m

The velocity time graph of mass 50g moving in a definite direction

What is the difference between methane and cfc gas

Upto which length current flows through water

110 volt toaster oven draws a current of 6 ampere on highest sitting acid converts is electrical energy into thermal energy the toasters maximum power rating is

Give one example of law of conservation of energy

A passenger in a bus tends to fall backward when it starts suddenly. give reasons

Uses of ,4Rprinciple

A particle Travels the first half of its Total distance along a straight line with a speed V kilometre per hour then next half with a speed of 60 km per hour the average speed for the total journey is 40 kilometre per hour then value of v is

Newton's Laws 1. The distance x covered in time t by a bodyhaving initial velocity vo and having a constantacceleration a is given byx = Vot+at?This result follows from (N.C.E.R.T. 1980)(1) Newton's first law(2) Newton's second law(3) Newton's third law(4) none of these three

Explain why a bicycle stops if we stop pedalling

4. A block of mass 5 kg initially at rest at theorigin is acted upon by a force along thepositive X - direction represented byF=(20 +5x)N. Calculate the work done by theforce during the displacement of the blockfrom x=0 to x=4m.

s=ut+1/2 at×t v=√u×u+2as v=u+at find displacement of a particle after 10s starting from the rest with a uniform acceleration of 2m/s×s

A stone is dropped from the top of a tall cliff and n seconds later another stone is thrown vertically downwards with a velocity u. Then the second stone overtakes the first, below the top of the cliff at a distance given by

A motorcycle and a car start from rest from the same place at the same time and travel in the same direction. The motorcycle accelerates at 1.0 m/s^2 up to a speed of 36 km/h and the car at 0.5 m/s^2 up to a speed of 54 km/h .The time at which the car would overtakethe motorcycle is

A=3i+2j+3k B=2i+3j के बीच का कोण ज्ञात करो

A car acquires a velocity of 72 km/h in 10s starting from rest. Find (a) accleration (b) distance travelled (c) average velocity

The components of the velocity of a particle are given by (4t-2) ms' and (4t2-1) ms along x-axis and y-axis respectively. Calculate (i) theaverage acceleration of the particle during the timeinterval fromt=1 to t=2s and (ii) accelerationof the particle at t=1.2 s.

A body moving along straight line covers a distance in three equal parts with speed 2 m/s, 3 m/s and4 m/s, then its average speed is