Recent content by nhmockus

Why wouldn't it be? Or are you saying that it could be negative?

Haha that's what i found. Sorry, it should be 57-35 to = 22. I did it correctly in my calculations

A ball A of mass makes a head-on elastic collision with a second ball B (at rest) and rebounds in the opposite direction with a speed equal to one-fourth its original speed. What is the mass of the second ball B? I think an appropriate equation for this is v(1)= u(1)*(m(1)-m(2))/(m(1)+m(2))...

A 0.145-kg baseball pitched at 35.0m/s is hit on a horizontal line drive straight back toward the pitcher at 57.0 m/s. If the contact time between bat and ball is 2.50×10−3s , calculate the average force between the ball and bat during contact. The equation has something to do with...

1. Homework Statement : Essentially it is a loop with a ramp leading to it. Find the height h the car would start from in order to complete the loop. Also find the speed the car would have to be at to complete the loop Your answer should be in terms of r. No friction 2. Homework Equations : I...