# Exam 5 Numbers 1-5 Physics 2016-2017

5 Questions | Total Attempts: 61  Settings  .

• 1.
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.

• 2.
Two skaters stand facing each other. One skater’s mass is 60 kg, and the other’s mass is 72 kg. If the skaters push away from each other without spinning,
• A.

The lighter skater has less momentum.

• B.

Their momenta are equal but opposite.

• C.

Their total momentum doubles.

• D.

Their total momentum decreases.

• 3.
In a two-body collision,
• A.

Momentum is always conserved.

• B.

Kinetic energy is always conserved.

• C.

Neither momentum nor kinetic energy is conserved.

• D.

Both momentum and kinetic energy are always conserved.

• 4.
A person sitting in a chair with wheels stands up, causing the chair to roll backward across the floor. The momentum of the chair
• A.

Was zero while stationary and increased when the person stood.

• B.

Was greatest while the person sat in the chair.

• C.

Remained the same.

• D.

Was zero when the person got out of the chair and increased while the person sat.

• 5.
Two swimmers relax close together on air mattresses in a pool. One swimmer’s mass is 48 kg, and the other’s mass is 55 kg. If the swimmers push away from each other,
• A.

Their total momentum triples.

• B.

Their momenta are equal but opposite.

• C.

Their total momentum doubles.

• D.

Their total momentum decreases. Back to top