Momentum and Its Conservation

Which of the following objects has the most momentum?

• A hippopotamus at rest

• A 100 kg man 2 m/s

• A 50 kg woman running at 1 m/s

• They all have the same momentum

Tags

NGSS.HS-PS2-2

What are the metric units for momentum?

• m/s

• m/s²

• kgm/s²

• kgm/s

Tags

NGSS.HS-PS2-2

What is the equation used to find the momentum of an object?

• mass x velocity

• distance / time

• velocity / time

• mass x acceleration

Tags

NGSS.HS-PS2-2

T/F If an object is at rest it can have momentum.

• True

• False

Tags

NGSS.HS-PS2-2

The Law of Conservation of Momentum states which of the following?

• energy can't be created or destroyed

• an object in motion tends to remain in motion AND an object at rests tends to remain at rest unless acted on by an unbalanced force

• the total momentum before the collision must be equal to the total momentum after the collision

• the greater the distance between two objects, the weaker the force of attraction between them

Tags

NGSS.HS-PS2-2

Why does a cannon recoil (move in the opposite direction of the cannonball) when it fires?

• the cannon has more momentum than the cannonball

• the cannon has less momentum than the cannonball

• the cannonball pushes back on the cannon with the same force the cannon pushes forward on the cannonball

• the cannon and cannonball have the same mass

Tags

NGSS.HS-PS2-2

Why does a cannon recoil with less velocity than the cannonball's velocity?

• Because while momentum is conserved, the cannon has much more mass than the cannonball

• Because while momentum is conserved, the cannonball has much more mass than the cannon

• Because momentum is not conserved and the cannonball has more momentum than the cannon

• None of these

Tags

NGSS.HS-PS2-2

The cannon's momentum immediately after firing is ....

• due to its large mass

• due to its large velocity

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Most of the cannonball's momentum immediately after being fired is due to its ....

• large mass

• large velocity

Tags

NGSS.HS-PS2-2

T/F The momentum of the cannon is equal and opposite that of the cannonball after firing (momentum is conserved).

• True

• False

Tags

NGSS.HS-PS2-2