A pellet -gun fires 15.2 pellets per second , each of mass 55.2 g, at a speed of 310m/s . A rigid wall stops the pellets.
a) What is the momentum of each pellet ?
b) What is the kinetic energy of each pellet?
c) What is the average force exerted by the stream of pellets on the wall?
d) If each pellet is in contact with the wall for 0.456s what is the average force exerted on the wall by each pellet during the contact?(Why is this so different from the average force of the stream?)