How do I calculate initial momentum  final momentum and change in momentum? Please do an example!!!

A 5.3 kg bowling ball is rolled down an alley at 4.2 m/s. A) what impulse is needed to bring it to a stop? b) if it takes 2.3 seconds to accomplish this, what is the applied force (average) draw a picture round significant figures show work

8.) In this photo, a fire extinguisher provides the impulse for a hallway rocket cart. Which is NOT true about the motion of the rocket cart and person? a.) The cart and person are propelled as a result of gas from the fire extinguisher pushing against air in the room. b.) The force of the gas on the cart and person is equal and opposite to the force of the person and cart on the expelled gas.      c.) The momentum of the cart and person is equal in magnitude and opposite in direction to the momentum of the expelled gas.

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mpletion Status: QUESTION 16 The momentum of an object at a given instant is in the same direction as its: OA. displacement OB. speed OC. velocity O D. acceleration O E. force QUESTION 17 A cart with mass 340 g moving on a frictionless surface at an initial speed of 1.2 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in in its original direction at 0.66 m/s. The mass and final speed of the second cart, respectively, are: OA. 173 g and 0.93 m/s OB.99 g and 1.9 m/s OC. 99 g and 0.64 m/s OD. 109 g and 0.93 m/s OE. 239 g and 1.9 m/s e All Answers to save all answers. MacB