a spring stretches by 4cm if you hang a 200g mass from it
A. what is its spring constant
B. if you shoot a 100 g block into the spring (lying horizontally on a frictionless) at a speed of 12 m/s, what will be the maximum compression of the spring
C. assume that the tale applies a constant force of friction of 0.5 N block. if the block compresses the spring by 3cm after hitting it, what was the speed of the ball(hit spring)?