First person to get multiple science question right will get 10 points?

Question

Questions 1-4
The two objects in the diagram below collide.

1. When the objects collide, how do the impulses delivered to each one compare?
a. The first object experiences the greater impulse.
b. The second object experiences the greater impulse.
c. Both objects experience the same impulse.
d. There is not enough information given to determine the greater impulse.
2. When the objects collide, which will experience the greater force from the collision?
a. The first object experiences the greater force.
b. The second object experiences the greater force.
c. Both objects experience the same force.
d. There is not enough information given to determine the greater force.
3. The units of impulse are often expressed as N • s. Which of the following units is equivalent to this?
a. kg m/s2
b. kg m/s
c. kg m2/s2
d. kg m2/s
4. Which object will experience the greater acceleration?
a. The first object experiences the greater acceleration.
b. The second object experiences the greater acceleration.
c. Both objects experience the same acceleration.
d. There is not enough information given to determine the greater acceleration.
Questions 5 and 6
A railroad car runs under a funnel that loads sand onto the car as it moves.

5. What will happen to the momentum of the car as sand is loaded onto it?
a. The momentum will increase because of the added mass.
b. The momentum will decrease because the car will move more slowly.
c. The momentum will stay the same. The extra mass will be compensated for by the loss of velocity.
d. It is impossible to determine the effect on momentum from the information given.
6. What will happen to the velocity of the railroad car?
a. The velocity will increase to compensate for the added mass.
b. The velocity will decrease because of the increased mass.
c. The velocity will remain the same as the car is loaded with sand.
d. It is impossible to predict the effect on the velocity from the information given.
7. A baseball traveling at 35 m/s is hit by a bat and reverses direction. The velocity of the baseball after being hit is 52 m/s in the opposite direction. What is the Δv of the baseball?
a. 17 m/s
b. -17 m/s
c. -87 m/s
d. 87 m/s
8. What is the velocity of a 6 kg ball with 79.2 kg • m/s of momentum?
a. 475 m/s
b. 0.076 m/s
c. 13.2 m/s
d. 72.2 m/s
9. A force of 439 N acts on a ball for 0.77 s. What is the impulse delivered to the ball?
a. 570 N • s
b. 338 N • s
c. 5.7 N • s
d. 438 N • s
10. What is the change in momentum experienced by the ball in question #9?
a. 570 kg • m/s
b. 338 kg • m/s
c. 5.7 kg • m/s
d. 438 kg • m/s
Questions 11-14
A cart is set in motion. After the cart is already moving, describe the effect of the indicated change. The cart resets to its original mass and velocity inbetween each problem.
11. What will happen to the velocity of the cart if its mass is suddenly doubled?
a. Velocity will also double.
b. Velocity will remain the same.
c. Velocity will be reduced to ½ its original value.
d. The change in velocity is unpredictable.
12. What will happen to the momentum of the cart if its mass is suddenly doubled?
a. Momentum will also double.
b. Momentum will remain the same.
c. Momentum will be reduced to its original value.
d. The change in momentum is unpredictable.
13. What will happen to the velocity of the cart if the mass is suddenly cut to 1/3 of its original value?
a. Velocity will triple.
b. Velocity will remain the same.
c. Velocity will be reduced to 1/3 its original value.
d. The change in velocity is unpredictable.
14. What will happen to the momentum of the cart if the velocity is suddenly tripled?
a. Momentum will also triple.
b. Momentum will remain the same.
c. Momentum will be reduced to 1/3 its original value.
d. The change in momentum is unpredictable.
15. A ball strikes a wall and reverses direction. The mass of the ball is 0.33 kg. It strikes the wall with a velocity of 4.6 m/s and leaves at the same speed in the opposite direction. How much impulse does the wall deliver to the ball?
a. 0 N • s
b. -1.52 N • s
c. 3.04 N • s
d. -3.04 N • s
16. A cannon is firmly mounted on a boat (ignore friction). The mass of the boat and cannon is 355 kg. A 28 kg ball is loaded into the cannon. The boat is initially motionless on the water. The ball is then fired from the cannon at a speed of 82 m/s. What is the velocity of the boat after the cannon ball is fired?
a. -6.47 m/s
b. 6.47 m/s
c. 5.99 m/s
d. -5.99 m/s
17. The 3 kg block traveling at 6 m/s strikes the stationary 7 kg block. After the collision, the velocity of the 3 kg block is 1.7 m/s. What is the final velocity of the 7 kg block?

a. 1.29 m/s
b. 4.3 m/s
c. 3.3 m/s
d. 1.84 m/s
18. The blocks collide as shown in the diagram. What is the final velocity of the 7 kg block?

a. 2.57 m/s
b. 6 m/s
c. 3.3 m/s
d. 1.84 m/s
19. The blocks collide and stick together as shown in the diagram. What is the final velocity of the two blocks after the collision?

a. 9.37 m/s
b. 4.01 m/s
c. 2.81 m/s
d. 1.08 m/s
20. The two blocks collide as shown in the diagram. What is the initial velocity of the 3 kg block?

a. 1.27 m/s
b. 3.21 m/s
c. 3.82 m/s
d. -6.13 m/s

Answer 1

u never give up

Answer 2

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Answer 3

Well there's no diagram so it's really hard to tell what is going on. Also, I agree with the other answerers that this looks like cheating, which is bad. Cheaters never prosper.

Answer 4

Not smart enough to do your own homework? If so, your cheating and it will hurt you in the long run.