A 13 g bullet pierces a sand bag 32 cm thick. If the initial velocity of the bullet was 68 m/s and it emerged from the sandbag with 18 m/s what is the average magnitude of the frictional force the bullet experienced while it travelled through the sand bag? 28 N 0.87 N 87 N

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: