Homework Statement
A pinball with mass 80g is struck by a lever with mass 80g in a pinball machine in an elastic collision. The lever was pulled back 2 cm by a spring with spring constant k=1.4N/cm. What is the speed of the ball just after collision?
Homework Equations
F=kx...
Yes I agree with both of your comments and thank you for posting. My friend took the MCAT this week and he called me after and relayed this problem to me, so I cannot verify that he wasn't mistaken about some of the variables given. He said that he also came to the answer of 22.5 meters but that...
Kinetic Friction Problem Needs Help!
Homework Statement
A truck is traveling at constant acceleration. A box of mass 80kg rests in the bed of the truck. The Kinetic Friction between the bed and the box is 0.5. After traveling for 3 seconds the box falls off the back of the truck, what is...