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ong>Question :

Two objects, each of MASS 1.5 kg are MOVING in the same straight line but in opposite DIRECTIONS. The velocity of each OBJECT is 2.5 m/s before collision during which they stick together. What will be the velocity of the combined objects after collision ?

Answer :

Given :

• Mass of first object (m₁) = 1.5 kg
• Velocity of first object (v₁) = 2.5 m/s
• Mass of second object (m₂) = 1.5 kg
• Velocity of second object (v₂) = -2.5 m/s (In opposite direction)

To find :

• Velocity of the combined objects after collision.

According to the question,

→ Momentum of first object = m₁ × v₁

→ Momentum of first object = 1.5 × 2.5

→ Momentum of first object = 3.75 kg m/s

Now,

→ Momentum of second object = m₂ × v₂

→ Momentum of second object = 1.5 × (-2.5)

→ Momentum of second object = -3.75 kg

→ Total momentum before collision = 3.75 + (-3.75)

→ Total momentum before collision = 3.75 - 3.75

→ Total momentum before collision = 0 kg m/s

So,

→ Total mass = m₁ + m₂

→ Total mass = 1.5 + 1.5

→ Total mass = 3.0 kg

→ Total momentum after collision = (m₁ + m₂) × v

→ Total momentum after collision = 3.0 × v

Now,according to the principle of conservation of momentum :

→ Total momentum before collision = Total momentum after collision during

→ 0 = 3.0 × v

→ 0 ÷ 3.0 = v

→ 0 = v

Thus,the velocity of the combined objects after collision will be zero meters per second square which means that the combined objects will come to a STOP after the collision.

_____________________________

the mass of TRUCK is much more,it will EXPERIENCE very LESS acceleration(deceleration). hence the IMPACT on car would be much larger than the impact on truck due to collision.

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Explanation:

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10kg-m/s^(2)

EXPLANATION:

v=u+at

7=3+a*2

a=2m/s^(2)

F=ma

=5*2

F=10

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ong>Answer:

1.Explanation: A physical QUANTITY is a property of a material or system that can be quantified by measurement. velocity TELLS us about both magnitude of speed and a particular direction. hence, it is also considered a vector quantity.

2.Some example of non-physical quantities are: FEELINGS, Angriness, Rudeness, etc. No one can measure the feeling of a person, or LOVE, etc.

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SILVER cannot displce hydrogen from acids or WATER .

ong>ANSWER:

SORRY i have not learn physics

Explanation:

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ong>Explanation:

The PROCESS by which a living being UTILIZES the food to get energy is called RESPIRATION. Respiration is an oxidation reaction in which carbohydrate is oxidized to produce energy. Mitochondrion is the site of respiration and the energy released is stored in the FORM of ATP (ADENOSINE triphosphate)The process by which a living being utilizes the food to get energy is called respiration. Respiration is an oxidation reaction in which carbohydrate is oxidized to produce energy. Mitochondrion is the site of respiration and the energy released is stored in the form of ATP (Adenosine triphosphate)The process by which a living being utilizes the food to get energy is called respiration. Respiration is an oxidation reaction in which carbohydrate is oxidized to produce energy. Mitochondrion is the site of respiration and the energy released is stored in the form of ATP (Adenosine triphosphate)The process by which a living being utilizes the food to get energy is called respiration. Respiration is an oxidation reaction in which carbohydrate is oxidized to produce energy. Mitochondrion is the site of respiration and the energy released is stored in the form of ATP (Adenosine triphosphate)Mark me BRAINLEIST

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hould PROTECT machines from MOISTURE because machines are made up of iron and if iron will come in contact with moisture and oxygen a chemical change will takes place which is NOTHING but rust . this rust can DESTROY iron that is why it is important to protect machines from moisture by coating it with WAX, paints etc

Period=7th , Group=14

ong>Answer:

roller coaster starts from rest at A, rolls down the track to B, describes a CIRCULAR loop of 40-ft diameter, and moves up and down past POINT E. knowing that h=60 ft and ASSUMING no energy loss due to friction, DETERMINE (a) the force exerted by his seat on a 160-lb rider at B and D, (b) the minimum value of the radius of curvature at E if the roller coaster is not to leave the track at that point.

ong>ANSWER:

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ong>ANSWER:

Air pressure has no effect at all in an ideal GAS APPROXIMATION. This is because pressure and density both contribute to sound velocity equally, and in an ideal gas the two effects cancel out, leaving only the effect of temperature. Sound usually travels more slowly with greater ALTITUDE, DUE to reduced temperature.

ong>Answer:

When the motorcyclist is at the HIGHEST point of the death - well, the NORMAL reaction R on the motorcyclist by the CEILING of the chamber ACTS DOWNWARDS. His weight mg also act downward

Here v is the speed of the motorcyclist and m is the mass of does not fall down. The minimum speed required to perform a vertical loop is given by equation (1) when R=0.

Therefore,

ong>ANSWER:

remain same.As only LATENT heat is realesed during this PROCESS.

ong>Answer:

A FIELDER giving a SWING while catching a BALL is an example of  newton's ii LAW of motion

ong>EXPLANATION:

POLAR DIELECTRICS: Are made of polar molecules. The CENTER of mass of positive charges does not COINCIDE with the center of mass of the NEGATIVE charges, in the molecule. In its normal state (i.e., in the ABSENCE of any external force, esp electric field), each molecule has some intrinsic permanent dipole and.

ong>Answer:

Thodi Jagah de de MUJHE tere paas Mera Jahan Khamoshiyan Teri SUNO aur Dur Tak Ja APNE Kuchh Main Tujhe Tere Dard Se jud JAU MAI

ong>Answer:

SEATBELTS

Explanation:

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ong>ANSWER:

aise kaise HOGA BHAI.?????

ong>Answer:

∆ V = 0

where, v = uniform velocity

Explanation:

The first LAW of motion can be mathematically stated from the mathematical expression for the SECOND law of motion

F = ma

F = m (v -u) / t [ since, a = (v -u / t) ]

or,

Ft = mv - mu

We know that when an object has a uniform motion, force applied for keeping it in motion is 0.

We know that v and u are equal for WHATEVER time taken. i.e. v = u for any time t

And so, acceleration is ALWAYS 0

change in uniform velocity = v - v / t

= 0 / t

= 0

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This is your REQUIRED answer.

ong>Answer:

the magnitude is also called modulus AUR the length of VECTOR . magnitude is represented BADAL length of directed line segment . a unit vector is vector of length1 to obtain unit vector in DIRECTION in any vector a we divide the modulus

( a1 , A2 ) the formula of modulus

||a||=√a21+a22

The Schrödinger equation is a linear partial differential equation that describes the wave function or state function of a quantum-mechanical system. It is a KEY RESULT in quantum MECHANICS, and its discovery was a SIGNIFICANT landmark in the development of the subject.

HELLO good morning........

The period of a simple pendulum is T=2π√Lg T = 2 π L G , where L is the length of the string and g is the acceleration DUE to gravity.

Explanation:

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ong>Answer:

It has HIGH resistance and CURRENT can not flow through it

ong>Explanation:

The motion of a freely falling body and a VERTICALLY thrown up body are the EXAMPLE of uniform accelaration. 2) The motion of a ball rolling down an inclined plane is another example of uniform accelaration....m

calculating UNIT vector perpendicular to A and B we need to CALCULATE cross PRODUCT of A and B .

ac newton , when he was 12 years OLD ?

When Isaac was 12 years old, he started school at The KING’s School in Grantham, England. He studied LATIN, Greek, and math there until the age of 17.

ong>ANSWER:

Current is a flow of electrical charge CARRIERS, usually electrons or electron-deficient atoms. ... The standard unit is the ampere, symbolized by A. One ampere of current REPRESENTS one COULOMB of electrical charge (6.24 x 1018 charge carriers) moving past a specific point in one second.

Explanation:

Hope this will help you..

>

12N

Explanation:

W = 120J

S = 10m

Using the RELATION:

W = F × S

F = W÷S = 120÷10 = 12 N

ong>Answer:

The impulse-MOMENTUM theorem STATES that the change in momentum of an object equals the impulse APPLIED to it.

Explanation:

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ong>Answer:

DIELECTRIC, insulating MATERIAL or a very poor conductor of electric current. When dielectrics are PLACED in an electric field, PRACTICALLY no current flows in them because, unlike metals, they have no loosely bound, or FREE, electrons that may drift through the material. Instead, electric polarization occurs.

Explanation:

ong>Answer:

Total distance TRAVELLED S=S

1

+S

2

=50km+60km=110km

Total TIME t=t

1

+t

2

t=

v

1

s

1

+

v

2

s

2

=

25

50

+

20

60

=5 h

Average velocity =

Total time of journey t

Total distance travelled S

=

5h

110km

=22 kmh

−1

ong>Answer:

maximum speed=35m/s

BC part of graph shows zero acceleration

acceleration from C to D is (0-35)/(10-8)

                                            =17.5m/s²

distance travelled from 3HRS to 8 hrs=area of RECTANGLE BCEF

                                                            =(8-3)*35

                                                            =175m

ong>Answer:

As the inside of Earth cooled, MAGNESIUM oxide could precipitate out, driving convection and the geodynamo. The researchers believe inner Earth eventually exhausted the magnesium oxide source to the point that the magnetic field almost completely collapsed 565 million years ago.

There are three components that are responsible for the magnitude as well as the DIRECTION of the earth's magnetic field: Magnetic declination. Magnetic inclination or the angle of DIP. Horizontal COMPONENT of the earth's magnetic field.Sep 29, 2020

I HOPE this answer is help you

a is TALLER than NYASA

OPTION 2........................

ong>Answer:

विद्युत धारिता का विमीय सूत्र `[M^(-1) L^(-2)T^(-4) A^(2)]` है |

धन्यवाद|

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ong>Answer:

There is only one condition when a RAY of light entering a medium from a different medium will not deviate, when the ray is incident on the interface separating the TWO medium normally to the interface ie when the ANGLE of incidence is zero. In this CASE there is no DEVIATION from the original path. If angle of incidence is zero, then the angle of refraction is also zero.

Explanation:

thi si UNIT of SPEED is m/s and the bigger unit is km/hr...

so other units cannot be considered for speed..

ANSWER IS 600 NM

Explanation: WORK = f*s

400*1.5 = 600 nm

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ong>Answer:

Refraction. Refraction, in PHYSICS, the change in direction of a wave passing from one medium to another caused by its change in speed. For EXAMPLE, waves in DEEP WATER travel faster than in shallow.

Hope this helps, have a GREAT day ;-)

ong>Answer:

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