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In an elastic collision of two billiard ...

In an elastic collision of two billiard balls, is the total kinetic energy conserved during the short time of collision of the ball (i.e when they are in contact)?

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The correct Answer is:
No
No, KE is not conserved during the short time of collision.
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Anwer carefully, with reasons: a) In an elastic collision of two billiard balls, is the total kinetic energy conserved during the short time of collision of the balls (i.e. when they are in contact)? Is the total linear momentum conserved during the short time of an elastic collision of two balls? c) What are the answers to a) and b) for an inelastic collision? d) If the potenital energy of two billiard balls depends only on the separation distance between their centers, is the collision elastic or inelastic? (note we are talking here of potential energy corresponding to the force during collision, not gravitational potential energy).

Assertion : In an elastic collision of two billiard balls, the total knetic energy is conserved during the short time of oscillation of the balls ( i.e. when they are in contact ) . Reason : Energy spent against friction does not follow the law of conservation of energy .

Assertion: In an elasticcollision of two billard balls, the total KE is conservation during the short times of collision of the balls (i.e., when they are in constant). Reason: Energy spend against friction does not follow the law of conservation of energy.

In an elastic collision of two billiard balls, which of the following quantities remain conserved during the short time of collision of the balls (i.e., when they are in contact). (a) Kinetic energy . (b) Total linear momentum ? Give reason for your answer in each case.

In an elastic collision of two billiard balls which of the following quantities is not conserved during the short time of collision :

During elastic collision of two balls, is kinetic energy conserved during the short interval of contact of balls ?

In an elastic collision between smooth balls :

Assertion: Collisionn between two billiard's ball are inelastic Reason: Momentum remains conserve during the collision.

ALLEN-CENTRE OF MASS-EXERCISE-IV A
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  4. A hemisphere of radius R and mass 4 m is free to slide with its base o...

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  5. A ball of mass 100 gm is projected vertically upwards from the ground ...

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  6. A block of mass M with a semicircualr of radius R, rests on a horizont...

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  7. Two bodies A and B of masses m and 2 m respectively are placed on a sm...

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  8. A sphere of mass m(1) in motion hits directly another sphere of mass m...

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  9. A simple pendalum is suspended from a peg on a verticle wall . The pen...

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  10. A small sphere of radius R is held against the inner surface of a larg...

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  11. The bob A of a simple pendulum released from 30^(@) to the vertical hi...

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  12. A massless platform is kept on a light elastic spring as shown in figu...

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  13. In an elastic collision of two billiard balls, is the total kinetic en...

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  14. A body 'A' moving in a straight line with velocity v makes a collision...

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  15. A particle of mass 2kg moving with a velocity 5hatim//s collides head-...

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  16. Three particles A, B and C of equal mass move with equal speed V along...

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  17. Block A of mass m//2 is connected to one end of light rope which passe...

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  18. Two masses A & B each of 5 kg are suspended by a light inextensible st...

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  19. Three identical balls eah of mass m=0.5 kg are connected with each oth...

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  20. Consider the system shown in figure. We know the masses of bodies : m ...

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