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A toy gun uses a spring with a force constant of 300N/m to propel a 15.0...

A toy gun uses a spring with a force constant of 300N/m to propel a 15.0 g steel ball. If the spring is compressed 6.00 cm and friction is negligible:

a) how much force is needed to compress the spring?

b) what is the maxium height that the ball can reach?

c) If the gun is fired at an angle of 7.50 degrees above the horizontal, what is the maxium distance the ball will travel on level ground?

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