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Two carts (A and B), having spring bumpe...

Two carts (A and B), having spring bumpers, collide as shown. Cart A has a mass of 2 kg and is initially moving to the right. Cart B has a mass of 3 kg and is initially stationary. When the separation between the carts is a minimum :

A

cart B is still at rest

B

cart A has come to rest

C

both carts have the same kinetic energy

D

the kinetic energy of the system is at a minimum

Text Solution

Verified by Experts

The correct Answer is:
D
At minimum separation, velocity of A and B are same and the compression in spring is maximum. Hence kinetic energy of the system is minimum.
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