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Originally Posted by Arkorobotics
Well your acceleration better be reallllyyyyy high up! but doesn't material count?  and compression?
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F=ma. The force will equal the mass of the ball times the acceleration.
Acceleration is the rate at which an object changes its velocity, so the compression will lower the acceleration by some amount. By slowing the ball over an extra 2 inches, you have a smaller acceleration. With a smaller acceleration you have a lower force.
All that means is you need a higher starting velocity.
Wetzel
PS: If someone who has taken actual physics rather than physics of a body in an accident and can explain it better please do.