Question

1. A 10,000 KG truck is traveling at +20 m/s. What would happen to the momentum of the truck if it increases in velocity in the same direction?

2. A 120 KG rugby player is running toward another player at 5 m/s. How much force needs to be applied over one second in order to bring him to a stop?

3. if the acceleration of an object decreases, what happens to the inertia?

A 10,000kg truck is traveling at +20m/s. What would happen to the momentum of the truck if it increases it's velocity in the same direction. A. It increases. B. Velocity has no impact on momentum. C. It decreases. D. Momentum - zero.

Answer 1

3) If the acceleration of an object decrease the inertia of the object will remain the same ( option a). Because inertia is the quantity which measures how an object opposes the change of its motion. And only depends on its mass.

( 1 e velocity, so if loption a ) momentum of any object = P- me where m= mass , so if so increases the momentum also increases (2) impulse of force = Change in momentan mu = (120x5) 01 (F.x1) => F = 600 N force needed to stop him in 1 sec. F. At me-0 - boo 600 N