Momentum & Impulse & Law of conservation

The Law of Conservation of Momentum states:

• The total momentum before a collision is equal to the total momentum after a collision.

• The total momentum before a collision is greater than the total momentum after a collision.

• The total momentum before a collision is less than the total momentum after a collision.

• The total momentum before a collision is not related to the total momentum after a collision.

Tags

NGSS.HS-PS2-2

If two objects collide or explode, they experience

• the same force for the same amount of time.

• different forces for the same amount of time.

• different forces for different amounts of time.

• the same force for different amounts of time.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

If two objects collide or explode, they experience

• the same impulse causing the same change in momentum.

• different impulses causing the same change in momentum.

• different impulses causing different changes in momentum.

• the same impulse causing different changes in momentum.

Tags

NGSS.HS-PS2-2

Pick all of the scenarios below that are collisions.

• A catcher catches a baseball.

• A pitcher throws a baseball.

• Two cars smash into each other.

• Two students on roller skates push away from each other.

• A bug smashes into a windshield.

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

Which cart in the image experiences a greater impulse?

• E

• F

• Same

• Not enough info

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Which cart in the image experiences a greater change in velocity?

• E

• F

• Same

• Not enough info

Tags

NGSS.HS-PS2-1

The law of conservation of momentum states that, 

• p before is less than p after
• p before is the same as p after
• p before is more than p after

Tags

NGSS.HS-PS2-2

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

• 0.1 kg-m/s
• 1 kg-m/s
• 10 kg-m/s
• 100 kg-m/s

Tags

NGSS.HS-PS2-2

If 2 objects collide and stick together, what will happen to their velocities?

• velocities will increase
• velocities will decrease
• velocities will stay the same
• none of the above

Tags

NGSS.HS-PS2-2

A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?

• 0 kgm/s
• 30 kgm/s
• 50 kgm/s
• 10 kgm/s

Tags

NGSS.HS-PS2-2