# Exam 5 Numbers 11-15 Physics 2016-2017

5 Questions | Total Attempts: 62  Settings  .

• 1.
11. In what kind of collision is kinetic energy always conserved?
• A.

Elastic collision

• B.

Inelastic collision

• C.

Inelastic collision

• D.

Perfectly inelastic collision

• 2.
12. A helium atom collides with another helium atom in an elastic collision. Which of the following is true?
• A.

Both momentum and kinetic energy are conserved.

• B.

Momentum is conserved but kinetic energy is not conserved.

• C.

Kinetic energy is conserved but momentum is not conserved.

• D.

Neither momentum nor kinetic energy is conserved.

• 3.
13. Two playground balls collide in an inelastic collision. Which of the following is true?
• A.

Both momentum and kinetic energy are conserved.

• B.

Momentum is conserved, but kinetic energy is not conserved.

• C.

Kinetic energy is conserved, but momentum is not conserved.

• D.

Neither momentum nor kinetic energy is conserved.

• 4.
14. In an inelastic collision between two objects with unequal masses,
• A.

The total momentum of the system will increase.

• B.

The total momentum of the system will decrease.

• C.

The kinetic energy of one object will increase by the amount that the kinetic energy of the other object decreases.

• D.

The momentum of one object will increase by the amount that the momentum of the other object decreases.

• 5.
15. A billiard ball collides with a stationary identical billiard ball in an elastic head-on collision. After the collision, which of the following is true of the first ball?
• A.

It maintains its initial velocity.

• B.

It has one-half its initial velocity.

• C.

It comes to rest.

• D.

It moves in the opposite direction. Back to top