Conservation of Momentum

While playing pool, the white cue ball strikes the 8 ball. Before the collision, the cue ball's velocity was 10 m/s and the 8 ball was at rest. If both ball's have a mass of 0.15 kg and the cue ball's velocity after the collision is 2 m/s, what is the 8 ball's velocity?

• 2 m/s
• 8 m/s
• -2 m/s
• 1.5 m/s

Tags

NGSS.HS-PS2-2

In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other.  The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s.  The carts stick together when they collide.  Calculate their final speed.

• 0.5 m/s
• 1.0 m/s
• 0.33 m/s
• 0.67 m/s

Tags

NGSS.HS-PS2-2

An 1 kg object moving to the right at 2 m/s collides inelastically with a 1 kg object moving to the left at 2 m/s. The final velocity of both objects will be 

• 0 m/s
• 1 m/s
• 2 m/s
• 4 m/s

Tags

NGSS.HS-PS2-2

The total momentum before a collision is _________ the total momentum after a collision.

• equal to 
• less than 
• more than
• It depends on the type of collision

Tags

NGSS.HS-PS2-2

A .030 kg bullet is fired from a gun with a velocity of 350 m/s. If the gun has a mass of 0.9 kg, What is the recoil velocity of the gun?

• -11.7 m/s

• 11.7 m/s

• 10.5 m/s

• -10.5 m/s

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-1

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...

• Skater 1 experiences a greater change in momentum
• Skater 2 experiences a greater change in momentum
• Skater 1 has a greater velocity than Skater 2
• Skater 1 experiences a greater force

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-1

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

Pick all of the scenarios that are explosions.

• A cannon fires a cannon ball.

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

• A linebacker tackles a member of the opposite team.

• A swimmer jumps off a floating raft.

• A figure skater throws a heavy ball.