Download Ch 04 Forces Sample Questions Multiple Choice Identify the choice

Ch 04 Forces Sample Questions
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. On the surface of Earth, the force of gravity acting on one kilogram is:
A. 22 pounds
B. 9.8 pounds
C. 2.2 newtons
D. 9.8 newtons
E. 4.448 newtons
2. The metric unit of force preferred by scientists is the:
A. kilogram.
B. newton.
C. mima.
D. pound.
E. cm/s
3. Weight is a force that depends on mass and:
A. friction.
B. gravity.
C. magnetism.
D. energy conservation.
E. acceleration.
4. Which of the following is one of the Four Elementary Forces?
A. Tension
B. Vector
C. Newton
D. Gravity
E. Centripital
5. Which of the following forces is a contact force?
A. Gravity
B. Friction
C. Magnetism
D. Electricity
E. Moon orbiting the Earth.
6. Which of the following is the largest unit of force?
A. Kilogram
B. Ounce
C. Gram
D. Newton
E. Pound
7. If an elephant has a mass of 2,000 kg, what is her weight on Earth?
A. 0.0049 N
B. 204 N
C. 19,600 N
D. 43,100 N
E. Not information is given.
8. Which of the following diagrams shows the force vector -2 N?
A.
B.
C.
D.
E.
A
B
C
D
A and B are correct.
9. What is the mass of a rock that weighs 49 newtons?
A. 1 kilogram
B. 2 kilograms
C. 5 kilograms
D. 10 kilograms
10. Brandon weighs 600. newtons. What is his mass?
A. 0.0163 kg
B. 9.8 kg
C. 61.2 kg
D. 2940 kg
11. Compared to your weight and mass on Earth, if you were on the moon:
A. your weight and mass would be less.
B. your weight would be less but your mass would remain the same.
C. your weight would remain the same, but your mass would be less.
D. your weight would increase, but your mass would remain the same.
12. Which pair of terms are vectors?
A. speed and mass
B. acceleration and force
C. velocity and speed
D. mass and weight
13. A force that resists the motion of an object moving across a surface is called:
A. static friction.
B. sliding friction.
C. rolling friction.
D. air friction.
14. The friction force that resists the motion between two surfaces that are not moving is called:
A. static friction.
B. sliding friction.
C. rolling friction.
D. air friction.
15. A force that resists motion is called:
A. weight.
B. motion.
C. equilibrium.
D. friction.
16. Which of the following would increase the sliding friction between your foot and the floor?
A. Increasing the weight on your foot.
B. Decreasing the weight on your foot.
C. Putting water between your foot and the floor.
D. Separating your foot and the floor.
17. Which of the following statements about friction is TRUE?
A. Friction is a force that resists motion.
B. Friction should always be removed.
C. Friction only occurs between solids.
D. Oils and other lubricants totally eliminate friction.
18. The tread on the bottom of your sneakers is designed to:
A. increase the friction between your foot and the ground.
B. decrease the friction between your foot and the ground.
C. not affect the friction between your foot and the ground.
D. change the direction of the friction between your foot and the ground.
19. How can the force of friction between two surfaces be reduced?
A. By changing rolling friction to sliding friction.
B. By making smooth surfaces rougher.
C. By separating surfaces with a lubricant.
D. By increasing the force between the surfaces.
20.
A student attempts to slide a block down a smooth, dry ramp as shown, but the block does not move. The
most likely explanation is that:
A. the ramp is not steep enough for gravity to have any effect.
B. there are no forces between the block and ramp.
C. the sliding friction between the block and the ramp is lower than the force of gravity
pulling the box down the ramp.
D. the static friction between the block and the ramp is greater than the force of gravity
pulling the box down the ramp.
21. When the forces on an object are balanced, we say that the object:
A. is in equilibrium.
B. is accelerating.
C. must be at rest.
D. must be moving at a constant speed.
22. In the picture below, a girl is sitting motionless on a swing. What is the net force on the girl?
A.
B.
C.
D.
0 newtons
245 newtons upwards
490 newtons upwards
490 newtons downwards
23.
Which free-body diagram shows an object that will accelerate?
A. Diagram A
B. Diagram B
C. Diagram C
D. Diagram D
24. Which of the following is an object in equilibrium?
A. A box resting on a table without moving
B. A box being pushed from rest to a speed of 5 cm/s
C. A box falling freely in the air with no strings attached
D. A box thrown up into the air
25.
A
B
C
D
Which graph of motion shows the motion of an object in equilibrium?
A. A
B. B
C. C
D. D
Answer Section, yes I know I left these here.
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