What are the units for momentum?

• J

• m/s

• kg-m/s

• N

Tags

NGSS.HS-PS2-2

What is the units for kinetic energy?

• J

• m/s

• kg-m/s

• N

What are the units for impulse? Two options

• J

• m/s

• kg-m/s

• N

• N-s

In which of the following is the momentum of the system conserved?

• Only elastic collision

• Only Inelastic collision

• Both elastic and inelastic collisions

Tags

NGSS.HS-PS2-2

Select the type of collision where kinetic energy is conserved.

• Perfectly elastic

• Inelastic collision

• Explosions

• None of the above

A car crashes into a wall and comes to a complete stop. How could the force experienced by the passengers be decreased?

• Decreasing the time it takes the car to come to a complete stop

• Increasing the time it takes for the car to come to a complete stop

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

A 4 kg ball is moving at 1 m/s. It then experiences an impulse of - 5 N-s.

What is the final momentum of the system?

• 4 kg-m/s

• -4 kg-m/s

• 1 kg-m/s

• -1 kg-m/s

Tags

NGSS.HS-PS2-2

A 4 kg ball is moving at 1 m/s. It then experiences an impulse of - 5 N-s.

What is the final velocity of the 4 kg ball?

• 1 m/s

• -1 m/s

• -0.25 m/s

• 0.25 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

The impulse is ______ the change in momentum

• greater than
• equal to
• less than
• always double

Tags

NGSS.HS-PS2-2

A runner has a momentum of 670 kg m/s and is traveling at a velocity of 9 m/s. What is his mass?

• 6030 kg
• 0.0134 kg
• 74.4 kg
• 80 kg

Tags

NGSS.HS-PS2-2