Momentum and the Law of Conservation of Momentum

What is the symbol for momentum?

• p

• m

• M

• mo

What is the SI unit for momentum?

• g m/s

• kg m/s

• m/s

• kg/s

Tags

NGSS.HS-PS2-2

Which of the following statements is not correct concerning momentum?

• Momentum is a vector quantity.

• An object moving at a constant speed has momentum.

• If an object's velocity changes, then its momentum will also change.

• Momentum is never conserved.

Tags

NGSS.HS-PS2-2

A truck is moving south on the parkway. If pollen from a tree floats northward on the parkway, is the momentum of the pollen positive or negative?

• positive

• negative

• neither

• can be both depending on the weather

Tags

NGSS.HS-PS2-2

According to the Law of Conservation of Momentum, when two objects collide:

• both objects lose momentum.

• both objects gain momentum

• momentum is neither lost nor gained.

• momentum is always lost or gainer.

Tags

NGSS.HS-PS2-2

A 7.5 kg purple bowling ball is rolling down the lane at 5 m/s. A 7.5 kg red bowling ball is rolling down another lane at 5 m/s. Which of the following statements is true?

• Both bowling balls have the same momentum.

• The purple bowling ball has a greater momentum.

• The red bowling ball has a greater momentum.

• The momentums of the bowling balls cannot be determined.

Tags

NGSS.HS-PS2-2

Which of the following objects would have the most momentum?

• A 10 kg ball rolling down the hallway at 2 m/s.

• A 5 kg ball rolling down the hallway at 5 m/s.

• A 100 kg ball at rest in the corner of the hallway.

• A 10 kg ball rolling down the hallway at 1 m/s.

Tags

NGSS.HS-PS2-2

A bike rider pedals straight up a hill at 3 m/s and then coasts down the other side of the hill at 11 m/s. Throughout the bike ride the momentum:

• remains the same

• was higher pedaling up the hill

• was higher coasting down the hill.

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NGSS.HS-PS2-2

Two soccer balls collide. The first soccer ball hits the second soccer ball which was at rest on the ground. What is true of the momentum?

• The total momentum of the isolated system stays the same.

• The total momentum of the isolated system decreases.

• The total momentum of the isolated system increases.

• The total momentum of the isolated system equals zero since the second soccer ball was at rest.

Tags

NGSS.HS-PS2-2

A 5.0 kg mass has a velocity change from 8.0 m/s east to 2.0 m/s east. Find the object's change in momentum.

• -30 kg m/s west

• 10 kg m/s west

• -40 kg m/s west

• -16 kg m/s west

Tags

NGSS.HS-PS2-2