1. A tennis ball of mass 0.12 kg is dropped vertically onto a hard concrete floor from a height of 1.5 m. The ball then bounces up to some maximum height h. If the ball bounces up to a height h =1.0 m, what is the approximate average force of the floor on the ball?
2. Consider a reaction that involves the creation of two elementary particles as in Figure P7.56. One particle is a proton of mass mp, and the other has a mass of m2Â =mp/1800. If the proton leaves the reaction with a speed vp, what is the final speed of the other particle? Express your answer in terms of vp.
Figure P7.56
No comments:
Post a Comment