What Is a Force? Chapter 1 Section 2 Review

1. What Is a Force?Chapter 1 Section 2 Review

2. 1.What is a newton? • A. A moving object • B. A point of reference • C. The SI unit for force • D. A push or pull

3. A newton is… C. The SI unit for force

4. 2. Force is… • A. A great deal of weight • B. A push or pull exerted on an object in order to change the object’s motion • C. A change in position relative to a reference point • D. The speed of an object in a certain direction

5. A force is… • B. A push or pull exerted on an object in order to change the object’s motion

6. 3. What is net force? • A. A blocker in volleyball • B. A push or pull • C. The speed of an object in a certain direction • D. The combination of all forces acting on an object

7. Net force is… • D. The combination of all forces acting on an object

8. 4. Are the forces on a kicked football balanced or unbalanced? Why? • A. Balanced, since the football is moving • B. Unbalanced, since the football is moving • C. Balanced, since the football is still • D. Unbalanced, since the football is still

9. The forces on a kicked football are… • B. Unbalanced, since the football is moving

10. 5. Which of the following choices best represents force? • A. A push or pull always causing motion • B. A push or pull always causing acceleration • C. A push or pull acting without an object • D. A push or pull acting on an object

11. Force is represented by… • D. A push or pull acting on an object

12. 6. A boy pulls a wagon with a force of 8 N West as another boy pushes it with a force of 6 N West. What is the net force? • A. 14 N East • B. 2 N West • C. 2 N East • D. 14 N West

13. 8 N West + 6 N West = • D. 14 N West

14. 7. Which of the following best determines net force when more than one force is acting on an object? • A. A combination of all motions of an object • B. A combination of all motions of an object in 2 directions • C. A combination of all forces acting on an object • D. A combination of forces acting on an object in 2 directions

15. Net force is best determined when… • C. A combination of all forces is acting on an object

16. 8. Which of the following may happen when an object receives unbalanced forces? • A. The object changes direction • B. The object changes speed • C. The object starts to move • D. All of the above

17. When an object receives unbalanced forces, it moves, so… • D. All of the above

18. 9. When the net forces equal 0 N, they are which of the following? • A. Balanced • B. Unbalanced • C. A push • D. A pull

19. When net forces equal 0 N, they are… • A. Balanced

20. 10. What is an example of an unbalanced force causing a change in motion? • A. Pulling on a drawer so it opens • B. Pushing a chair across the floor • C. Pedaling a bicycle • D. All of the above

21. D. All of the above

22. 11. Which of the following always causes a change in speed, direction, or both? • A. Balanced forces • B. Unbalanced forces • C. Either balanced or unbalanced forces • D. Any combination of forces

23. B. Unbalanced forces

24. 12. What is an example of an object that has balanced forces acting on it? • A. A car going down the street • B. A book resting on a table • C. A kid riding a bike • D. A windmill turning

25. B. A book resting on a table

26. 13. Which of the following causes an object to start moving? • A. Balanced forces • B. Unbalanced forces • C. Either balanced or unbalanced forces • D. Any combination of forces

27. B. Unbalanced forces

28. 14. One Newton is the equivalent of… • A. About 100 grams • B. 1 pound • C. 1 apple • D. 10 grams

29. 1 Newton is equal to… • A. About 100 grams

30. 15. When 2 forces act in opposite directions, you ______ the smaller force from the larger force to determine the net force. • A. Add • B. Subtract • C. Multiply • D. Divide

31. B. Subtract

32. The quiz is on Tuesday! • Make sure you are prepared! • Study, study, study!!!