Review of Momentum

Momentum is a ____________________ quantity

• science

• scalar

• vector

• energy

Tags

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 35 kg child runs across a store at 4 m/s and jumps onto a 30 kg shopping cart initially at rest. At what speed will the shopping cart and the child move together across the store?

• 1 m/s

• 2.2 m/s

• 5 m/s

• 6.2 m/s

Tags

NGSS.HS-PS2-2

A bug flies into the windshield of a car going the opposite way. Which of the following are true.

• the force of impact is the same for both

• the impulse is the same for both

• the acceleration of the bug is larger than the truck

• A, B, and C are all true

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

NGSS.HS-PS2-3

Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds. Which cart experiences the greatest impulse?

• Cart B

• Cart A

• they are the same

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

True/False:  The momentum does not change unless outside forces act on the objects.

• True
• False

Tags

NGSS.HS-PS2-2

A 1kg kick ball flying at 10m/s hits a wall and bounces off at 8m/s. What is the impulse?

• 2 kgm/s

• 18 kgm/s

• 19 kgm/s

• 20 kgm/s

Tags

NGSS.HS-PS2-2

A 1300 kg car sliding on frictionless ice at 25 m/s hits a stationary 2400 kg minivan. The two vehicles are locked together after impact on the ice. What is their speed after impact?

• 0.0 m/s

• 8.8 m/s

• 25 m/s

• 14 m/s

Tags

NGSS.HS-PS2-2

In this type of collision, objects tend to "stick" together.

• elastic
• inelastic 
• They "stick" together in both types of collisions

Momentum is conserved in this type of collision

• elastic
• inelastic
• momentum is conserved in both types of collisions

Tags

NGSS.HS-PS2-2