Physics

A cart on an airtrack is moving at 0.5m/s.when the air is suddenly turned off the cart comes to rest after traveling 1m the experiment repeated but now the cart is moving at 1m/s when turned off .how far does the cart travel the cart travel before coming to rest?

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  1. 4 meters. The second cart has four times the kinetic energy of the first cart. The friction force is the same in both cases.

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