Name: Period: Date: Momentum and Impulse Practice

Name:____________________________________________ Period:____ Date:____________Momentum and Impulse Practice

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A) 9.9 N•s B) 1800 N•sC) 3.8 N•s D) 4.4 N•s

1. A 0.45-kilogram football traveling at a speed of 22 meters persecond is caught by an 84-kilogram stationary receiver. If thefootball comes to rest in the receiver’s arms, the magnitude ofthe impulse imparted to the receiver by the ball is

2. Two disk magnets are arranged at rest on a friction lesshorizontal surface as shown in the diagram below. When thestring holding them together is cut, they move apart under amagnetic force of repulsion. When the 1.0-kilogram diskreaches a speed of 3.0 meters per second, what is the speed ofthe 0.5-kilogram disk?

A) 1.0 m/s B) 0.50 m/sC) 3.0 m/s D) 6.0 m/s

3. In the diagram below, a 10-kilogram ball is fired with avelocity of 500 meters per second from a 1,000-kilogramcannon. What is the recoil velocity of the cannon?

A) 5 m/s B) 2 m/sC) 10 m/s D) 500 m/s

4. Base your answer to the following question on A 3.0-kilogramsteel block is at rest on a friction-less horizontal surface. A1.0-kilogram lump of clay is propelled horizontally at 6.0meters per second toward the block as shown in the diagrambelow.

A) 1.5 m/s B) 2.0 m/sC) 3.0 m/s D) 6.0 m/s

Upon collision, the clay and steel block stick together andmove to the right with a speed of

A) 120 N B) 290 N C) 690 N D) 920 N

5. A 75-kilogram hockey player is skating across the ice at aspeed of 6.0 meters per second. What is the magnitude of theaverage force required to stop the player in 0.65 second?

A) At the end of 3 seconds of free-fall, the 10-N ball willhave a greater momentum than the 5-N ball.

B) The 5-N ball will have a greater acceleration than the10-N ball.

C) At the end of 3 seconds of free-fall, the 5-N ball willhave a greater momentum than the 10-N ball.

D) The 10-N ball will have a greater acceleration than the5-N ball.

6. A 5-newton ball and a 10-newton ball are releasedsimultaneously from a point 50 meters above the surface ofthe Earth. Neglecting air resistance, which statement is true?


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7. In the diagram below, a block of mass initially at rest on a frictionless horizontal surface is struck by a bullet ofmass moving with horizontal velocity .

A)

B)

C)

D)

What is the velocity of the bullet-block system after the bullet embeds itself in the block?

A) a 12-kg mass moving at 1 m/secB) a 5-kg mass moving at 2 m/secC) a 9-kg mass moving at 3 m/secD) a 4-kg mass moving at 4 m/sec

8. Which object has the greatest momentum?

A) 5.0 × 103 m/s B) 5.0 × 102 m/sC) 5.0 × 100 m/s D) 5.0 × 101 m/s

9. The mass of a space shuttle is approximately 2.0 × 106 kilograms. During lift-off, the net force on theshuttle is 1.0 × 107 Newtons directed upward. What is thespeed of the shuttle 10. seconds after lift-off? [Neglect airresistance and the mass change of the shuttle.]

10. Lab carts A and B are initially at rest with a compressedspring between them as shown in the diagram below.

A) Cart B has twice the momentum of cart A.B) Cart B has twice the velocity of cart A.C) Cart A has twice the velocity of cart B.D) Cart A has twice the momentum of cart B.

Which statement best describes the motion of the carts afterthe spring is released?


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11. Base your answer to the following question on The diagram below shows a 4.0-kilogram cart moving to the rightand a 6.0-kilogram cart moving to the left on a horizontal frictionless surface.

A) 15 kg•m/s B) 30. kg•m/s C) 0.0 kg•m/s D) 6.0 kg•m/s

When the two carts collide they lock together. The magnitude of the total momentum of the two-cart system after thecollision is

A) accelerating it from rest to 3.0 m/sB) accelerating it from 2.0 m/s to 4.0 m/sC) applying a net force of 10.0 N for 0.5 sD) applying a net force of 5.0 N for 2.0 s

12. Which situation will produce the greatest change ofmomentum for a 1.0-kilogram cart?

A) momentum of cannon + momentum of projectile = 0

B) speed of cannon + speed of projectile = 0C) mass of cannon + mass of projectile = 0D) velocity of cannon + velocity of projectile = 0

13. A 2.0-kilogram toy cannon is at rest on a frictionless surface.A remote triggering device causes a 0.005-kilogramprojectile to be fired from the cannon. Which equationdescribes this system after the cannon is fired?

14. Base your answer to the following question on the graphbelow, which shows the velocity of a 1,500-kilogram carduring a 20-second-time interval.

A) 9.0 x 102 N-sec. B) 6.0 x 103 N-sec.C) 1.5 x 104 N-sec. D) 4.5 x 103 N-sec.

The impulse applied to the car during time interval AB is


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15. Base your answer to the following question on theinformation and diagram below.

The diagram shows a compressed spring between twocarts initially at rest on a horizontal frictionless surface.Cart A has a mass of 2 kilograms and cart B has a mass of1 kilogram. A string holds the carts together.

A) inertia B) kinetic energyC) velocity D) momentum

After the string is cut and the two carts move apart, themagnitude of which quantity is the same for both carts?

Answer KeyMomentum Practice

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1. A

2. D

3. A

4. A

5. C

6. A

7. B

8. C

9. D

10. C

11. D

12. D

13. A

14. C

15. D

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Name: Period: Date: Momentum and Impulse Practice

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