A tennis player receives a shot with the ball of mass 0.06 kg traveling horizontally at 50.0 m/s and returns the shot with the ball traveling horizontally at 40.0 m/s in the
opposite direction.
(i) What is the impulse delivered to the ball by the racquet?
(ii) How much work does the racquet do on the ball?

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final