What Is a Force? Chapter 1 Section 2 Review

A. A moving object B. A point of reference C. The SI unit for force 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

A newton is… C. The SI unit for force

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

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

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

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

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

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

5. Which of the following choices best represents force? A. A push or pull which never causes 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

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

A. 14 N East B. 2 N West C. 2 N East D. 14 N West 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

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

A. A combination of all motions of an object 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

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

A. The object changes direction B. The object changes speed 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

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

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

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

A. Pulling on a drawer so it opens B. Pushing a chair across the floor 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

D. All of the above

C. Either balanced or unbalanced forces D. Any combination of forces 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

B. Unbalanced forces

A. A car going down the street B. A book resting on a table 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

B. A book resting on a table

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

B. Unbalanced forces

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

1 Newton is equal to… A. About 100 grams

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

B. Subtract

Make sure you are prepared! Study, study, study!!! The quiz is on Tuesday! Make sure you are prepared! Study, study, study!!! You can find this review on the Frost website under Science Homework!