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    Average force on a 100g ball bouncing elastically off a wall

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    Average force on a 100g ball bouncing elastically off a wall

    Homework Statement A 100 g ball bounces off a wall elastically. Its initial speed is 3 m/s perpendicular to the wall. If the collision lasts for 10 ms, what is the average force exerted by the wall on the ball? Homework Equations F=ma Conservation of energy & momentum (?) F=dP/dt...
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