# Physics

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A tennis ball may leave the racket on a serve by a top player with a speed of 45.0 m/s. If the ball's mass is 0.063 kg, and it is in contact with the racket for 0.030 s, what is the average force (in newtons) on the ball?

• Physics -

F=Δp/Δt=mΔv/Δt=
=0.063•45/0.03=94.5 N

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