A freight car of mass 6,000 kg moves along a frictionless level railroad track with a constant speed of 12 m/s. What is the momentum of the freight car?

• 500 kg-m/s

• 7,200 kg-m/s

• 50,000 kg-m/s

• 72,000 kg-m/s

Tags

NGSS.HS-PS2-2

When a ball is hit by a bat, it experiences a force of 3,000 N for 0.003 seconds. What is the impulse experienced by the ball?

• 9 N-s

• 1,000 N-s

• 9,000 N-s

• 1,000,000 N-s

Tags

NGSS.HS-PS2-1

Bumper car A moves forward with an initial momentum of 320 kg-m/s when it receives an impulse of 160 N-s as it is hit from the opposite direction by bumper car B. What is the final momentum of bumper car A?

• 0

• 160 kg-m/s

• -160 kg-m/s

• 480 kg-m/s

Tags

NGSS.HS-PS2-2

A tennis ball with a momentum of 12 kg-m/s collides with a racket and bounces in the opposite direction with a momentum of 16 kg-m/s. What is the change in momentum of the tennis ball?

• -4 kg-m/s

• 4 kg-m/s

• 16 k-m/s

• 28 kg-m/s

Tags

NGSS.HS-PS2-2

A 150 kg motorbike traveling at 30 m/s brakes to a stop in 1.5 seconds. What force was exerted on the motorbike by the brakes?

• 3,000 N

• 6,750 N

• 4,500 N

• 30,000 N

Tags

NGSS.HS-PS2-1

A runner has of mass 45 kg and momentum of +90 kg-m/s. What is the runner’s velocity?

• 1 m/s

• 2 m/s

• 3 m/s

• 4 m/s

Tags

NGSS.HS-PS2-2

If an object has a momentum of 20 kg-m/s and it is traveling with a velocity of +1 m/s, what is the mass of the object?

• 10 kg

• 20 kg

• 30 kg

• 40 kg

Tags

NGSS.HS-PS2-2

A skater of mass 45 kg is traveling with a velocity of +3 m/s. If the skater turns around and travels with a velocity of -2 m/s, what is the skater’s change in momentum?

• 225 kg-m/s

• 135 kg-m/s

• - 225 kg-m/s

• - 135 kg-m/s

Tags

NGSS.HS-PS2-2

An object is traveling with a velocity of +10 m/s. If the object experiences a force of 5 N for 5 seconds, what is the impulse the object experiences?

• 15 N-s

• 20 N-s

• 25 N-s

• 30 N-s

Tags

NGSS.HS-PS2-1

A 20 kg mass slides along a frictionless table at 6 m/s. It collides with a stationary 10 kg mass. Afterward, the first mass moves at 2 m/s. What is the velocity of the second mass if the momentum is conserved?

• 8 m/s

• 6 m/s

• 4 m/s

• 2 m/s

Tags

NGSS.HS-PS2-2