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## Homework Statement

Two objects (A and B) of equal mass, undergo an elastic collision in deep space. Initially, B is at rest and A approaches at velocity v. The duration of contact is 2 seconds.

(a) What is the velocity of object A after the collision (final velocity)?

(b) What is the final velocity of B?

(c) At what time is the kinetic energy of the two object system a minimum?

(d) What has the kinetic energy been converted to?

## Homework Equations

## The Attempt at a Solution

(a) A velocity is 0.

(b) B velocity is equal to A initial velocity, v.

(c) I don't know :|

(d) Momentum (not sure).