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Chapter 18 Test Review. What is a reference point? The object that stays in place in relation to a moving object.

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Presentation on theme: "Chapter 18 Test Review. What is a reference point? The object that stays in place in relation to a moving object."— Presentation transcript:

1 Chapter 18 Test Review

2 What is a reference point? The object that stays in place in relation to a moving object.

3 What 3 factors describe motion? Position, direction of motion, and speed.

4 What is the equation for acceleration? Average acceleration = Final velocity - starting velocity time it takes to change velocity

5 What is the equation for average speed? Average speed = total distance total time

6 What factors affect an object’s gravitational force? Masses of the objects and distance of the objects.

7 How do you find the net force of an object? Combine all forces acting on an object.

8 Compare speed and velocity. Velocity must have a direction. Both are the distance an object travels divided by the time it takes.

9 What is the affect of an unbalanced force? A balanced force? An unbalanced force will cause a change in motion, speed, or direction. A balanced force will not cause change.

10 When graphing acceleration or speed: what does an upward slope mean, what does a downward slope mean? Upward slope = increase in acceleration, Downward slope = decrease in acceleration.

11 Magnetic force: The force that pushes magnets apart or pulls them together. Motion: object’s change in position relative to a reference point. Gravity: The force of attraction between objects that is due to their mass. Friction: a force that always acts to oppose motion. Electric Force: The force that pushes or pulls charged objects

12 Speed: the distance traveled over time. Velocity: distance and direction traveled over time. Law of Universal Gravitation: idea that all objects in the universe attract each other through gravitational force. Acceleration: a change in a moving object’s speed or direction. Force: a push or pull that always acts on an object.


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