PH-163
Resultant force and F = ma
Physics · Secondary 3 · Hard · Resultant force and F = ma
A 3 kg trolley is pushed along a rough horizontal surface by a horizontal force of 14 N. The trolley accelerates at 3 m/s². What is the frictional force acting on the trolley?
- 5 N
- 3 N
- 9 N
- 14 N
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