Conservation of Momentum

Which of the following is NOT a unit of momentum?

• kg*m/s

• N*s

• kg*mph

• kg*m/s²

Tags

NGSS.HS-PS2-2

What is the total momentum before the collision?

• +13000 kg*m/s

• -3000 kg*m/s

• -13000 kg*m/s

• +3000 kg*m/s

Tags

NGSS.HS-PS2-2

When a rocket lifts off, its upward momentum is matched by the downward momentum of _____.

• nothing

• hot gases expelled by the rocket

• air pushed out of the way by the rocket

• the launch pad

Tags

NGSS.HS-PS2-2

A billiard ball rolls to the right and hits a stationary billiard ball. What direction is the total momentum of the system after they hit?

• Neither

• There's no way to know

• Left

• Right

Tags

NGSS.HS-PS2-2

What is the total momentum AFTER the collision?

Tags

NGSS.HS-PS2-2

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-PS2-1

NGSS.HS-PS2-2

A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg,  collides with a smaller box with a mass of 2 kg that is stationary.  The boxes stick together. What is the velocity of the two combined masses after collision?

• 0 m/s

• 4 m/s

• 8 m/s

• 12 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