Unit 6 Review: Work-Energy-Power-Momentum

When two objects collide, the p_before is ____________ the p_after.

• more than 
• less than 
• equal to
• unrelated to

Tags

PHYS.6A

PHYS.6B

David is observing a car stopped at a red light and Ethan is riding a bike at 5 m/s. Who has more momentum: David's car or Ethan's bike?

• David's car

• Ethan's bike

• they are equal

• cannot determine using the info provided

Tags

PHYS.6A

PHYS.6B

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 

• 55 kg*m/s
• 100 kg*m/s
• 250 kg*m/s
• 500 kg*m/s

Tags

PHYS.6A

PHYS.6B

If an object has a momentum of 40 kg m/s and a mass of 60 kg, what is it's velocity?

• 2400 m/s

• 1.5 m/s

• 240 m/s

• .67 m/s

Tags

PHYS.6A

PHYS.6B

Benjamin is observing a penguin at the zoo. The penguin, weighing 30 kg, starts sliding down a slope at a speed of .67 m/s. What is the momentum of the penguin?

• 44.8 kg⋅m/s

• 20.1 kg⋅m/s

• 25 kg⋅m/s

• 67.4 kg⋅m/s

Tags

PHYS.6A

PHYS.6B

During a school trip to Antarctica, Benjamin observed a penguin tripping on some ice and hitting the ground with a force of 34 N over .74 seconds. Jackson, being a physics enthusiast, decided to calculate the impulse. Can you help Jackson find out the impulse?

• 45.9 Ns

• 36.2 Ns

• 22.9 Ns

• 25.16 Ns

Tags

PHYS.6A

PHYS.6B

A 27 kg penguin sliding at 2.1 m/s slides into a penguin at rest. They spin off together entangled at .78 m/s. What is the mass of the penguin at rest?

• 32.8 kg

• 45.7 kg

• 56.7 kg

• 45.7 N

Tags

PHYS.6A

PHYS.6B

A 27 kg penguin sliding at 2.1 m/s slides into a 45.7kg penguin at rest. They spin off together entangled at .78 m/s. Is the kinetic energy conserved in this collision? Show your work to prove how you know.

Tags

NGSS.HS-PS2-2

A 2200 kg Honda civic travelling at 23 m/s crashes into a 6500 monster truck at rest. If the Civic was travelling at 2 m/s after the collision, what was the monster truck's velocity after the collision?

• 2.95 m/s

• 7.1 m/s

• 46200 m/s

• 6.8 m/s

Tags

PHYS.6A

PHYS.6B

Match the following definitions to their terms.

• kinetic energy is conserved, they bounce

• Impulse

• Product of net force over the time

• Inelastic collision

• The product of mass and velocity

• Momentum

• kinetic energy not conserved, they stick

• Elastic collision

Tags

PHYS.6A

PHYS.6B