Question

6. A 50-kg front seat passenger in a car moving initially with a speed of 25 m/sisbr rest by an air bag in a time of 0.4 s a) What is the impulse acting on the passenger? b) What is the average force acting on the passenger in this process?? 7. A ball traveling with an initial momentum of 5.0 kg.m/s bounces off a wall and comes back in the opposite direction with a momentum of -4.5 kg.m/s a) What is the change in momentum of the ball? b) What impulse is required to produce this change? A pitcher throws a 0.6-kg of clay at a 5-kg wooden block. The clay sticks to the wood on impact, and their joint velocity afterwards is 4 m/s. What was the speed of the clay? 8. A 2,500-kg truck runs into the rear of a 950-kg car that was stationary. The truck and car are locked together after the collision, and move with a speed of 10 m/s. a) What was the speed of the truck before the collision? b) What was the initial momentum of the truck? 9. 10. A red ball of mass 0.35 kg hits a blue ball of mass 0.4 kg, in an elastic collision, and th red ball comes to a stop. The red ball has a velocity of 5 m/s, and the blue ball was at rest. What is the final velocity of the blue ball?

Answer 1

01) b)