Suppose you place two identical carts on an air track. Cart 1 you push so it is

Question

Suppose you place two identical carts on an air track. Cart 1 you push so it is heading in the positive x direction with the an initial speed (v0). Cart 2 is at rest. After colliding elastically (no sticking together at all), what are the velocities of the two carts?

(a) Cart 1 comes to rest, and Cart 2 heads in the positive x direction with speed v0. (b) Cart 1 bounces back at speed v0/ 2 , and Cart 2 heads in the positive x direction with speed v0 /2 . (c) Cart 1 bounces back at speed v0, and Cart 2 heads in the positive x direction with speed v0. (d) Cart 1 bounces back at speed v0, and Cart 2 remains at rest

Explanation / Answer

answer is

a)Cart 1 comes to rest, and Cart 2 heads in the positive x direction with speed v0

in this case velocity is intechanged after the elastic collisiion of 2 carts ,The cart 1 will have velocity 0 and cart 2 wil have vo .

so the answer is A

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