Force Review Questions ANSWER KEY

These questions are intended to be used for review as a whole class. The delivery method can vary: jeopardy game, worksheet, flashcards, online game, etc.

Questions follow on the next page.

Name _____________________________

Unit 3 Review

Multiple Choice

Circle the letter of the correct choice.

1. Motion is a vector if it includes both distance and

1. speed.
2. length.
3. position.
4. direction.

2. A bicyclist traveling on a straight road went from 0 m/s to 2m/s in 2 seconds. What was the bicyclist’s acceleration?

1. 1 m/s2
2. 2 m/s2
3. 4 m/s2
4. none of the above

3. In the sketch below, what is the net force acting on the block? ^[1]

1. 0 N to the right
2. 3 N to the right
3. 6 N to the right
4. 9 N to the right

4. What determines the inertia of any object?

1. its mass
2. its volume
3. friction acting on it
4. two of the above

5. An object’s velocity will change only if it is acted on by a(n)

1. net force.
2. strong force.
3. moving force.
4. unbalanced force.

True or False

Write true if the statement is true or false if the statement is false.

_____ 6. The slope of a distance-time graph represents speed.

_____ 7. You can stand on a sidewalk without slipping because of friction.

_____ 8. Newton’s second law of motion is also called the law of inertia.

Fill in the Blank

Fill in the blank with the appropriate term.

9. Acceleration is a change in speed or __________________.

10. __________________ was the first person to suggest that gravity affects all objects in the universe.

11. According to Newton’s __________________ law of motion, forces always act in pairs.

12. An object’s mass multiplied by its velocity equals its __________________.

Short Answer

Answer the following questions in complete sentences.

13. Relate the concepts of force, weight, and mass.

14. Compare and contrast Newton’s three laws of motion.

15. Compare and contrast the forces of gravity, magnetism, and electricity.