Conservation of momentum Quiz 1

An external force _____ the total momentum of a closed system

• changes

• does not change

Tags

NGSS.HS-PS2-2

An internal force _____ the total momentum of a closed system

• Changes

• does not change

Tags

NGSS.HS-PS2-2

When the force of a club is external to the golfball, the momentum of the golfball

• changes

• does not change

When the force of a club is internal to the club-golfball system, the momentum of the club is transefered to the golfball so that total momentum before and after collision is the same.

• True

• False

The Law of Conservation of Momentum states that: in the absence of an external force or external impulse,

• The net momentum of a closed systems remains unchanged or the momentum before collision is equal to momentum after 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.

If two people are standing on scateboards and are throwing football at each other, the distance between them will,

• decrease over time

• increase over time

• Remain the same

When two objects collide or explode, they experience

• the same force for the same amount of time.

• different forces for different amounts of time.

• different forces for the same amount of time.

• the same force for different amounts of time.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

When two objects collide or explode, they experience

• the same impulse causing the same change in momentum.

• different impulses causing different changes in momentum.

• different impulses causing the same change in momentum.

• the same impulse causing different changes in momentum.

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.

Pick all of the scenarios that are explosions.

• A cannon firing a cannon ball.

• A spoon being shoved into a jar of peanut butter.

• A linebacker tackling a member of the opposite team.

• a pitcher throwing a football

• two ice skaters push each other away.