Momentum Review Test

A roller coaster climbs up a hill at 4 m/s and then zips down the hill at 30 m/s. The momentum of the roller coaster:

• is greater up the hill than down the hill.

• is greater down the hill than up the hill.

• remains the same throughout the ride.

• is zero throughout the ride.

Tags

NGSS.HS-PS2-2

A 0.2 kg baseball is pitched with a velocity of 40 m/s and is then batted to the pitcher with a velocity of 60 m/s. What is the magnitude of change in the ball's momentum?

• 2 kg·m/s

• 4 kg·m/s

• 8 kg·m/s

• 20 kg·m/s

Tags

NGSS.HS-PS2-2

A child with a mass of 23 kg rides a bike with a mass of 5.5 kg at a velocity of 4.5 m/s to the south. Compare the momentum of the child with the momentum of the bike.

• Both the child and the bike have the same momentum.

• The bike has a greater momentum than the child.

• The child has a greater momentum than the bike.

• Neither the child nor the bike has momentum.

Tags

NGSS.HS-PS2-2

Which of the following equations can be used to directly calculate an object's momentum, p?

• p = mv

• p = FΔt

• Δp = FΔt

Tags

NGSS.HS-PS2-2

A 75 kg person walking around a corner bumped into an 80 kg person who was running around the same corner. The momentum of the 80 kg person:

• increased.

• decreased.

Tags

NGSS.HS-PS2-2

A ball with a momentum of 4.0 kg*m/s hits a wall and bounces straight back without losing any kinetic energy. What is the change in the ball’s momentum?

• a) -8.0 kg*m/s

• b) -4.0 kg*m/s

• c) 0.0 kg*m/s

• d) 8.0 kg*m/s

Tags

NGSS.HS-PS2-2

Two objects with different masses collide and bounce back after an elastic collision. Before the collision, the two objects were moving at velocities equal in magnitude but opposite in direction. After the collision:

• a) the less massive object had gained momentum.

• b) the more massive object had gained momentum.

• c) both objects had the same momentum.

• d) both objects lost momentum.

Tags

NGSS.HS-PS2-2

When comparing the momentum of two moving objects, which of the following is correct?

• a) The object with the higher velocity will have less momentum if the masses are equal.

• b) The more massive object will have less momentum if its velocity is greater.

• c) The less massive object will have less momentum if the velocities are the same.

• d) The more massive object will have less momentum if the velocities are the same.

Tags

NGSS.HS-PS2-2

What are the SI units for momentum?

• a) N*m

• b) J

• c) kg*m/s

Tags

NGSS.HS-PS2-2

The change in an object's momentum is equal to

• the product of the mass of the object and the time interval.

• the product of the force applied to the object and the time interval.

• the time interval divided by the net external force.

• the net external force divided by the time interval.

Tags

NGSS.HS-PS2-2