A tennis ball of mass 0.060 kg travels horizontally at a speed of 25m/s. The ball hits a tennis racket and rebounds horizontally at a speed of 40 m/s.

Before hitting the Racket, the ball is going towards the racket at 25 m/s.

After Hitting the Racket the ball of going away from the racket at 40 m/s.

The ball is in contact with the racket for 50 ms.
What force does the racket exert on the ball?
A 0.018N
B 0.078N
C 18N
D 78N

Shelly experiences a backward jolt when the driver starts the school bus. which of the following explains this phenomenon? a. the inertia of shelly b. the inertia of the bus c. the normal force of the seats on shelly d. the net force acting on shelly in a backward direction e. a zero net force acting on shelly

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato

Atomic nuclei of almost all elements consist of