Momentum and Impulse

What is the momentum of a 30 kg penguin sliding at .67 m/s?

• 44.8 kg⋅m/s

• 20.1 kg⋅m/s

• 25 kg⋅m/s

• 67.4 kg⋅m/s

Tags

NGSS.HS-PS2-2

A penguin trips on some ice and hits the ground with a force of 34 N over .74 seconds. What was the impulse?

• 45.9 Ns

• 36.2 Ns

• 22.9 Ns

• 25.16 Ns

Tags

NGSS.HS-PS2-1

Match the following units with their variables!

• seconds

• Momentum

• kilograms

• Mass

• Ns

• Impulse

• kg⋅m/s

• Time

• m/s

• Velocity

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

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

NGSS.HS-PS2-2

Match the following definitions to their terms.

• kinetic energy not conserved, they stick

• Impulse

• Product of net force over the time

• Inelastic collision

• kinetic energy is conserved, they bounce

• Momentum

• The product of mass and velocity

• Elastic collision

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

The impulse given to an object is equal to the change in momentum.

• True!

• False!

• Could be either.

• Not enough information to tell.

Tags

NGSS.HS-PS2-2

The impulse given to an object is equal to the change in kinetic energy.

• True!

• False!

• Not enough information to tell!

• Only in certain situations

What type of collision conserves kinetic energy and objects bounce?

What type of collision doesn't conserve kinetic energy and objects stick?