I need help with some momentum questions and the formulas i need to use to find the answers.(adsbygoogle = window.adsbygoogle || []).push({});

1. A car weighting 15,680 N and moving at 20 m/s is actd upon by a 6.4 x 10^2 N force until it is brought to a halt.

a. What is the car's mass? 1600Kg?

b. What is its initial momentum?

c. What is the change in car's momentum?

d. How long does the braking force act on the car to bring it to a halt?

2. A cannon on wheels fires a cannonball with a mass of 10 kg at a velocity of 20 m/s, horizontally. The cannon's recoil velocity is 1.5 m/s. What is the cannon's mass?

3. A 35 g bullet moving at 475 m/s strikes a 2.5 kg wooden block. The bullet passes througgh the block , leaving at 275 m/s. The block was at rest when it was hit. How fast is it moving when the bullet leaves?

4. Two campers dock a canoe. One camper steps onto the dock. This camper has a mass of 80 kg and moves forward at 4 m/s. With what speed and direction do the canoe and the other camper move if their combined mass is 110 kg?

5. A 50 g projectile is launched with a horizontal velocity of 647 m/s from a 4.65 kg launcher moving at 2 m/s. What is the velocity of the launcher after the projectile is launched?

6. A 6kg object, A, moving at velocity 3.0 m/s, collides with a 6.0 kg object, B, at rest. After the collision A moves off in a direction 40(degrees) to the left of its original direction. B moves off in a direction 50(degrees) to the righ tof A's original direction.

a. Draw a vector diagram and determine the momenta of object and object B.

b. What is the velocity of each object after the collision?

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# Homework Help: Momentum Problems

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