# Question: A 20 kg box sits on a rough horizontal surface When

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).

(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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