Momentum. Definition. Formula. Units. Momentum. Vector quantity Direction matches direction of velocity. Example #1. Impulse equals change in momentum…. Example #2.
A 1400 kg car moving westward with a velocity of 15 m/s collides with a utility pole and is brought to rest in 0.30 s. Find the magnitude of the force
exerted on the car during the collision.
A 2250 kg car traveling to the west slows down uniformly from 20.0 m/s to 5.00 m/s. How long does it take the car to decelerate if the force on the car is 8450 N to the east? How far does the car travel during the deceleration?
The total momentum of all objects interacting with one another remains constant
regardless of the nature of the forces between the objects.
No! Only way for the final momentum to be zero is for the initial momentum to be zero! Initially both skaters would have to have the same momentum in opposite directions….
Momentum of the spacecraft & its fuel before the rockets are fired must equal the momentum of the two after the rockets are fired…