Conservation of Momentum Practice

According to Newton's Laws, for every action there is an ....

• equal and opposite reaction.

• equal and parallel reaction.

• unequal and opposite reaction.

• unequal and unrelated reaction.

Tags

NGSS.MS-PS2-1

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

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

Pick all of the scenarios below that are Inelastic 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-PS2-3

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.

Pick all of the scenarios below that are elastic collisions.

• Two bouncy balls hitting each other.

• A pitcher throws a baseball.

• Two cars smash into each other and bounce off.

• A bowling ball striking a pin

• A bug smashes into a windshield.

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

Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, which equation correctly enforces the principle of conservation of momentum to determine the combined speed of the two players just after the collision?

• mv = m₁v₁' + m₂v₂'

• m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'

• m₁v₁ + m₂v₂ = mv'

• m₁v₁ + m₂v₂ = m₁v₁ + m₂v₂

Tags

NGSS.HS-PS2-2

Two groups of canoeists meet in the middle of a lake. After a brief visit, a person in Canoe 1 (total mass 130 kg) pushes on Canoe 2 (total mass 250 kg). Canoe 2 moves away with a speed of 0.22 m/s. Which equation correctly enforces the principle of conservation of momentum to determine the speed of Canoe 1?

• mv = m₁v₁' + m₂v₂'

• m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'

• m₁v₁ + m₂v₂ = mv'

• m₁v₁ + m₂v₂ = m₁v₁ + m₂v₂

Tags

NGSS.HS-PS2-2

A moving bomb explodes. Which equation correctly enforces the principle of conservation of momentum to determine the speed of fragment #2?

• mv = m₁v₁' + m₂v₂'

• m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'

• m₁v₁ + m₂v₂ = mv'

• m₁v₁ + m₂v₂ = m₁v₁ + m₂v₂

Tags

NGSS.HS-PS2-2