Momentum Review

A change in momentum or ΔP is also called _________.

• force

• velocity

• acceleration

• impulse

Tags

NGSS.HS-PS2-2

An arrow shooting into a stationary block of ice. The arrow imbeds into the block of ice.

Is this an elastic or inelastic collision?

• elastic

• inelastic

Tags

NGSS.HS-PS2-2

A bowling ball rolls into a beach ball, causing the beach ball to bounce away.

Is this an elastic or inelastic collision?

• elastic

• inelastic

Tags

NGSS.HS-PS2-2

To find the momentum of an object you should multiply...

• mass times its velocity.

• force times the time interval.

• force times its acceleration.

• mass times its acceleration.

Tags

NGSS.HS-PS2-2

Two cars, A and B, have the same mass. Car A is doing 30 mph, and Car B is doing 60. Which of the following statements is true?

• Car B has twice as much momentum as Car A.

• Car B has four times as much momentum as Car A.

• Car B has the same momentum as Car A.

Tags

NGSS.HS-PS2-2

If the momentum of an object changes,

• it is accelerating (or decelerating).

• there is a force acting on it.

• its velocity is changing.

• all of the above

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-1

The momentum change of an object is equal to the

• impulse acting on it.

• velocity change of the object.

• force acting on it times its velocity.

• object's mass times the force acting on it.

Tags

NGSS.HS-PS2-2

A 5-kg object moving horizontally at 4 m/s has a head-on collision with a 4-kg object that moves toward it at 2 m/s. What is the speed of the two objects stuck together immediately after the collision?

• 0.8 m/s

• 1.3 m/s

• 12 m/s

• 1.5 m/s

Tags

NGSS.HS-PS2-2

A 30-kg girl and a 50-kg boy face each other on friction-free roller skates. The girl pushes the boy. The boy moves away at a speed of 3 m/s. What is the girl's speed?

• 5.0 m/s

• 2.1 m/s

• 0.2 m/s

• 17 m/s

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-1

Which formulas show the relationships between momentum, mass, and velocity? Check the 3 that apply.

• p = mv

• p = m/v

• m = p/v

• v = p/m

Tags

NGSS.HS-PS2-2