Question

A 20-kg box sits on a rough horizontal surface. When a horizontal force of 120 N is applied, the object accelerates at 1.0 m/s2.
(a) If the applied force is doubled, the acceleration will (1) increase, but less than double; (2) also double; (3) increase, but more than double. Why?
(b) Calculate the acceleration to prove your answer to part (a).


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  • CreatedAugust 29, 2015
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