Physics

Problem

A puck of mass 0.50 kg slides east on a frictionless surface and is brought to rest in 0.50 s by a uniform acceleration of 4 m/s² acting west. What is the net force acting on the puck? a)

4\ \text{N west}

2\ \text{N east}

2\ \text{N west}

1\ \text{N west}

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