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Non-accelerated MOTION

I THINK it should be in a VACCUM

A ball COMING with a great SPEED stops when the goalkeeper give a force to STOP it with the hands .......

The short ANSWER is that velocity is the speed with a direction, while speed does not have a direction. Speed is a scalar quantity -- it is the magnitude of the velocity. Speed is MEASURED in units of distance DIVIDED by time, e.g. miles per hour, feet per SECOND, meters per second, ETC....

When a PARTICLE travels along the CURVED PATH there is some motionoccurred which is calledcurvilinear motion. Someexamples of curvilinear motionare: Jeep travel in curved roadways, ... Running race in curved track.

It don't get ATTRACTED because it lost its magnetism when heated.
Magnets are made up of atoms. In normal environmental conditions, these atoms align between the poles and foster magnetism. When exposed to hotter conditions, the PARTICLES within the magnet are MOVING at an INCREASINGLY faster and sporadic rate. This JUMBLING confuses and misaligns the particles, causing the magnetism to be lost.

First law example:- The stone won't move unless someone moves it.
or
The soccer ball will not move until PLAYER KICKS it.

Second law example:- It takes less FORCE to move a DVD than a DVD player.
or
Push a large box and a small box with the same force, the small box will go faster.

Third law example:- A fireman turns on his hose & is knocked backwards.
or
If air is let out of a balloon QUICKLY, air PUSHES down & balloon goes up.

F = m * a
( FORCE) = (mass) into (acceleration)

there fore force REQUIRED to LIFT an object of mass 100 gm
= 0.1 * 9.8 ( acceleration DUE to gravity of earth)
= 0.98 N (NEWTON a unit use to measure force)

Thanks for asking the question!

ANSWER::

Centre of MASS of velocity of shell = 0 (initially at rest)

Therefore , 0 = 49 m x V + m x 200

V = -200/49 m/s

200/49 m/s towards left .

Another shell is FIRE , then the velocity of the CAR , with respect to platform is

V' = 200/49 m/s towards left

Another shell is fired , then the velocity of the car with respect to platform is

v' = 200/48 m/s towards left

Now , the velocity of the car with respect to earth is (200/49 + 200/48) = 19400/2352 = 8.24 m/s towards left.

Hope it HELPS!

Given:

A wooden block of mass 0.6kg is on a ROUGH horizontal surface. a FORCE of 12N is APPLIED to the block and it accelerates at 4m/s².

To find:

Magnitude of frictional force ?

Diagram:

Calculation:

Let the coefficient of KINETIC friction be

According to the FBD of the block:

So, the frictional force acting on the block is 9.6 N.

In order to FIND the FOCAL length of a lens experimentally we have to use the UV method. The formula for focal length is the RATIO of product of UV to sum of UV.

Where U is the object distance and V is the image distance.

Take a candle and PLACE it 60cm away from a convex lens such that it lies ALONG the principal axis. Now the most important part is adjust the screen so that you can take the readings of image distance and object distance carefully. Finally after 3 to 4 readings you can find the focal length from the mean of the values.

THANKS for asking the question!

ANSWER::

Mass of BALL = 50 g = 0.05 kg

v = 2 cos 45° i - 2 sin 45° j

v₁ = -2 cos 45° i - 2 sin 45° j

(a) Change in momentum ⇒ m v = m v₁

⇒0.05( 2 cos 45° i - 2 sin 45° j ) - 0.05 ( -2 cos 45° i - 2 sin 45° j )

⇒0.1 cos 45° i - 0.1 sin 45° j + 0.1 cos 45° i + 0.1 sin 45° j

⇒0.2 cos 45° i

Therefore , Magnitude = √[0.2/√2]² = 0.2 / √2 = 0.2 / 1.4 = 0.14 kg m/s

(b) Change in magnitude of momentum of the ball = P(INITIAL) - P(final)

= (2 x 0.5) - (2 x 0.5)

= 0

Hope it helps!

ʜᴇʟʟᴏ ᴍᴀᴛᴇ!

First we will apply SECOND EQUATION of motion.

s = ut + 1/2 ( at² )

4 m = (0)(2) + 1/2( a )(2)²

4 = 2a

2 m/s² = acceleration


Now, convert g into kg = 500 / 1000 kg or 0.5 kg

As, Force = mass × acceleration
Or F = ma

Force = ( 0.5 kg )( 2 m/s² )
Force = 1 N

Hope it helps

┏─━─━─━─━∞◆∞━─━─━─━─┓ ✭✮ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ✮✭ ┗─━─━─━─━∞◆∞━─━─━─━─┛

➧ MASS 0f Vehicle ➾ 1500 N
➧ Acceleration ➾ -1.7 m/s²
➧ Force ➾ ? 

❱ F ➾ m × a

F ➾ 1500 Kg (-1.7 m/s²)
F ➾ -2500 Kg m/s²
F ➾ -2500 N ...✔

_________               THANKS...✊

The System of UNITS which is at PRESENT INTERNATIONAL ACCEPTED for measurement in the is the system Internationaled units (France for international System of units ) abbreviated as SI.

Hope it helps you✌✌

Thankyou ☺☺

A body MOVING ALONG a straight line at 20 m/s decelerates at the

rate of 4 m/s2

. After 2 SECONDS its speed will be equal to

Materials can be grouped into :

Transparent materials — They allow light to pass through them. Examples are GLASS and water.

Translucent materials — They allow little light to pass through. Examples are bitter paper and GROUND glass.

Opaque materials — They don't allow light to pass through them. They include STONE and wood.

The right hand rule STATES that: todetermine the direction of themagnetic force on a positive MOVING charge, ƒ, point the thumb of the right hand in the direction of V, the fingers in the direction of B, and a PERPENDICULAR to the palm points in the direction of F.

I have lifted a suitcase and kept on the table. in this process I used muscular force .and you KNOW muscular forces are non CONSERVATIVE force. and non conservative force DEPENDENCE on path. but independent upon time takes.

hence, option '(c) time taken by you in doing so.'is CORRECT

This is related with 2nd law of MOTION .
Player MOVES his hand backward to increase the time during which the high velocity of moving ball DECREASES to zero.
as we know that force is INVERSELY proportional to time so when we increase the time the MOMENTUM of ball decreases which reduces the force exerted by the ball.
That's why player pulls his hand backwards.

HOPE this HELPS!!!The ANSWER is 35 N.

to increase FRICTION between ROAD and tyres to STOP QUICKLY

Where is the FIGURE? ???

I THINK this PROCESS is PHOTOSYNTHESIS

the WEIGHT is 12g.

hope it HELPS..

So that the LIGHT does not PASS through it. it WORKS as a OPAQUE median who ABSORB light

On LUNAR surface there is no friction from air. So, Both will reach the GROUND TOGETHER as only gravity WOULD be acting on them. There would be no other external force acting on them.

I. The study of Home Science familiarizes us with the household PROBLEMS and the WAYS to solve them.

II. Home science is an art and science. It teaches us to do all the household jobs in a systematic and scientific manner.

III. It ALSO teaches us the art of managing jobs LIKE cleanliness, washing of clothes, etc. by spending LESS time and energy. 

IV. Home Science teaches us about the child development and human relationship. In child development, the students are taught about the physical, mental, social, and emotional development of the child.

THE SPLITING OF LIGHT RAY WHEN IT PASSES FROM 1 MEDIUMS TO ANOTHER MEDIUM



HOPE IT HELPS YOU

Given in the question :-

Moment of Inertia = 5KG m

speed of rotation = 60 rad/s.

(a)Now we have to calculate the angular retardation (α)

Angular speed (initial) ⍵ =60 rad/s

Angular speed (final) ⍵' =0

Time, t = 5 min or 300 s.

Now , we know the formula

α = 0.20 rad/s²

Now we have

Moment of Inertia = 5.0 kg.m²

Hence, AVERAGE frictional torque = Iα

=5.0 × 0.20

(b) Let the angle rotated

θ =60 × 300 - 0.50 × 0.20 × 300²

θ =18000 - 0.10 × 90000

θ =18000-9000

θ =9000 rad

Now , Work done is given as

W.D = Tθ

= 1.0 × 9000

(c) Assume that the angular speed at time 240 s will be ω''

ω'' = 60 - 0.20 × 240

ω'' =60 - 48

ω'' =12 rad/s

1 minute before stopping the wheel , now the angular momentum will be

= Iω''

= 5.0 × 12

Hope it Helps :-)

GIVEN in the question :-

Mass of the rod = 1 kg.

(a)Now according to the formula we know that

Since mass is unifirmly distributed hence there is no DIFFERENCE in the torque .

Now the moment of Inertia of the pivoted

=

= 1× 1² /12

= 1/12 kg.m²

Therefore the total MI will be.

= 1.75 + 1/12

= 1.75+0.083

=1.833 kg.m²

Now we have to find the angular acceleration i.e α

Put the given values

=1.5× 9.8/1.833

=8.0 rad/ s²

(b) Now for finding the Linear acceleration

=8.0 × 0.5

=4.0 m /s²

Now weight 2g N is on the downwards DIRECTION , hence in result tension t and accelration a will be in upward.

Now,

From the given condition at 2kg mass.

T=2g+2a

=2× 9.8+2 × 4.0

=19.6+8

= 27.6 N

Hence accleration is in downwards direction at 5 kg mass.

T=5 g-5 a

=5 × 9.8 -5 × 4

=49-20

=29 N.

Hope it Helps :-)

If This Is RIGHT PLZ.. MARK As BRAINLIEST.

There are 8 planets in our solar system
mercury it is the coaldest planet in our solar system
venus it is called a RED planet
earth is called mother planet
mars is called a morning star
jupitar is called a biggest planet in UR solar system
saturn is called as ring planet

Hiii

➡️ It is EQUAL to the SPEED of SOUND in AIR

ANSWER: 500 √2 m

Explanation:

HOPE it HELPS!

Here is your ans.

I THINK IT'S HELP YOU...

Distilled water has a pH 7 but water have pH LESS than 7 so it is ACIDIC that's why it conduct electricity

Number of ATOMIC dipoles, n = 2 × 10²⁴
dipole of each dipole MOMENT ,M = 1.5 × 10^-23J/T
so, dipole moment at complete SATURATION, M = 2 × 10²⁴ × 1.5 × 10^-23 = 30 J/T

at 0.84T and 4.2K , 15% of sample is magnetised.
so use FORMULA,
----(1)

at 0.98T and 2.8K ,
-----(2)
from equations (1) and (2),
M = 7.875 J/T

Here....

Acceleration=velocity/time
=90×5/18=25m/sec

Acceleration=25/5=5m/sec^2

Force=mass × accekeration
Force=200×5
Force=1000N

@SKB