During a collision with a wall, the velocity of a 0.200-kg ball changes from 20.0 m/s toward the wall to 12.0 m/s away from the wall. If the time the ball was in contact with the wall was 60.0 ms, what was the magnitude of the average force applied to the ball? O 167N 0400N O 13.3 N 107 N

An antitank weapon fires a 3.00-kg projectile which acquires a speed of 50.0 m/s after traveling 90.0 cm down a launching tube. Assuming the projectile was accelerated uniformly, what was the average force that acted on it? a. 4.17×(10^3)N b. 3.62×(10^3)N C. 2.82×(10^3)N d. 2.00×(10^3)N

Jacob, a professional heavyweight boxer, delivers a forceful punch with his fist and arm, combining for an effective punching mass of 2.56 kg. His fist strikes a heavy bag at a velocity of 9.1 m/s and comes to a halt 10.9 ms after initial contact. Determine the magnitude of the average net force that Jacob exerts on the heavy bag. a. 2137 N b. 3569 N c. 5321 N d. 2757 Ne. 6112 N

A 1000kg "Smart Car' is stopped at an intersection. A large 4000kg SUV approaches from behind with a velocity of 15m/s and finds itself on a sheet of ice, unable to slow down or change direction. The cars collide in a perfectly inelastic collision which lasts 0.1 seconds. a. Calculate the average force and acceleration that each car experiences during the collision. b. Calculate the average net force that would be exerted on a driver of mass 50 kg if he/she was in either car. Compare these forces to weight, e.g., twice as large as gravity.