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A spring gun (k = 750 N/m) is loaded with a 55.3 g ball and compressed...

A spring gun (k = 750 N/m) is loaded with a 55.3 g ball and compressed 12.0 cm. The gun is then fired horizontally off a 8.0 m high platform.

(a) How fast will the ball be moving just as it leaves the spring gun (before it begins to fall)?

(b) Determine the speed of the ball as it hits the ground. (Assume the ball is 8.0 m above the ground when it is fired.)

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