If a tennis racket strikes a ball (m = 60.0 g; v = 65.0 m/s) for a period of what force does the tennis racket apply to the ball? what is the impulse of this interaction?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

Can you receive a shock severe enough to prevent you from releasing the wire from an ordinary outlet with dry hands? a. no b. yes explain