After falling from rest from a height of 30-m, a 0.50-kg ball rebounds upward, reaching a maximum height of 20-m. If the contact between the ball and the ground lasted 20 milliseconds, what average force was exerted on the ball by the ground?

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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: