8) If an ostrich with a mass of 184.9 kg and is running northward with a velocity of 20.4 m/s, then with what velocity must a chicken run with a mass of 46.2 kg to have the same momentum as the ostrich?
9) Air bags are designed to protect passengers during collisions by extending the time of impact. A force of 81.9 Newtons is required to stop a moving passenger in 1.1 seconds with an airbag. The amount of time required without an airbag is 20 times less. What would be the force of impact (in Newtons) without an airbag?
11) A 2.39-kg rubber ball moving with a speed of 5.36 m/s strikes a wall and rebounds with a speed of 2.3 m/s in the opposite direction. Determine the impulse (in Newton-second) encountered by the ball.
The solutions contain good explanations and all the formulas used to arrive at the answers.