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A big ball of mass $M$ , moving with velocity $u$ strikes a small ball of mass $m$ , which is at rest. Finally, a small ball attains velocity $u$ and a big ball $v$ . What is the value of $v$ :-

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Important Questions on Centre of Mass, Momentum and Collisions

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Beta Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise (Conceptual Questions)>Q 76

A particle of mass m moving with speed v towards east strikes another particle of same mass moving with same speed v towards north. After striking, the two particles fuse together. With what speed this new particle of mass 2 m will move in north-east direction?

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Beta Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise (Conceptual Questions)>Q 77

Two ice skaters

A

and

B

approach each other at right angles. Skater

A

has a mass

30 kg

and velocity

1 m s^{- 1}

and skater

B

has a mass

20 kg

and velocity

2 m s^{- 1}

. They meet and cling together. Their final velocity of the couple is:

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Beta Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise (Previous Year Questions)>Q 1

For inelastic collision between two spherical rigid bodies

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Beta Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise (Previous Year Questions)>Q 2

Two bodies of mass

1 kg

and

3 kg

have position vectors

\hat{i} + 2 \hat{j} + \hat{k}

and

- 3 \hat{i} - 2 \hat{j} + \hat{k}

, respectively. The centre of mass of this system has a position vecotor:

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Beta Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise (Previous Year Questions)>Q 4

A ball moving with velocity

2 m s^{- 1}

collides head-on with another stationary ball of double the mass. If the coefficient of restitution is

0.5

, then their velocities (in

m s^{- 1}

) after collision will be

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Beta Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise (Previous Year Questions)>Q 5

Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are

v

and

2 v

at any instant, then the speed of centre of mass of system will be

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Beta Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise (Previous Year Questions)>Q 6

A man of

50 kg

mass is standing in a gravity free space at a height of

10 m

above the floor. He throws a stone of

0.5 kg

mass downwards with a speed of

2 m s^{- 1}

. When the stone reaches the floor, the distance of the man above the floor will be.

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Beta Question Bank for Medical: Physics>Chapter 9 - Centre of Mass, Momentum and Collisions>Exercise (Previous Year Questions)>Q 7

Two persons of masses

55 kg

and

65 kg

, respectively, are at the opposite ends of a boat. The length of the boat is

3.0 m

and weighs

100 kg

. The

55 kg

man walks up to the

65 kg

man and sits with him. If the boat is in still water, then the centre of mass of the system shifts by

A big ball of mass M, moving with velocity u strikes a small ball of mass m, which is at rest. Finally, a small ball attains velocity u and a big ball v. What is the value of v:-

Important Questions on Centre of Mass, Momentum and Collisions

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A big ball of mass $M$ , moving with velocity $u$ strikes a small ball of mass $m$ , which is at rest. Finally, a small ball attains velocity $u$ and a big ball $v$ . What is the value of $v$ :-