Preap Physics Exam #5 Numbers 16-20
.
- 1.16. In what kind of collision is kinetic energy always conserved?
- A.
A. elastic collision
- B.
B. inelastic collision
- C.
C. perfectly elastic collision
- D.
D. perfectly inelasticd. perfectly inelastic collision
- 2.17. A helium atom collides with another helium atom in an elastic collision. Which of the following is true?
- A.
a. Both momentum and kinetic energy are conserved.
- B.
b. Momentum is conserved but kinetic energy is not conserved.
- C.
c. Kinetic energy is conserved but momentum is not conserved.
- D.
d. Neither momentum nor kinetic energy is conserved.
- 3.18. Two playground balls collide in an inelastic collision. Which of the following is true?
- A.
a. Both momentum and kinetic energy are conserved.
- B.
b. Momentum is conserved, but kinetic energy is not conserved.
- C.
c. Kinetic energy is conserved, but momentum is not conserved.
- D.
d. Neither momentum nor kinetic energy is conserved.
- 4.19. In an inelastic collision between two objects with unequal masses,
- A.
a. the total momentum of the system will increase.
- B.
b. the total momentum of the system will decrease.
- C.
c. the kinetic energy of one object will increase by the amount that the kinetic energy of the other object decreases.
- D.
d. the momentum of one object will increase by the amount that the momentum of the other object decreases.
- 5.20. 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.
a. It maintains its initial velocity.
- B.
b. It has one-half its initial velocity.
- C.
c. It comes to rest.
- D.
d. It moves in the opposite direction.
Questions: 5 | Attempts: 154 | Last updated: Oct 14, 2016
-
Sample QuestionWhich of the following quantities used to describe motion is an example of a vector quantity?
Questions: 5 | Attempts: 95 | Last updated: Aug 29, 2015
-
Sample Question16. What does the graph on the right illustrate about acceleration?
Questions: 5 | Attempts: 69 | Last updated: Sep 13, 2015
-
Sample Question6. The length of a force vector represents the
Back to top