Recent content by Elissa

mv=m1v1+m2v2 v=(-(0.125m/s)(0.250kg)+(0.655m/s)(0.360kg))/0.250kg=0.818m/s. This is definitely right because I already submitted the answer and got it correct. Should the velocity of Puck A be negative when solving for kinetic energy?

Homework Statement On a frictionless, horizontal air table, puck A (with mass 0.250 kg ) is moving toward puck B (with mass 0.360 kg ), that is initially at rest. After the collision, puck A has a velocity of 0.125 m/s to the left, and puck B has velocity 0.655 m/s to the right. I already...