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CHOICE 1 CHOICE 2 CHOICE 3 CHOICE 4 CHOICE 5 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500

Row 1, Col 1 Total distance/total time What is the formula you use to find average speed?

1,2 Centimeters Which unit do we use to measure distance?

1,3 The amount of distance and the amount of time. What sorts of variables affect your average speed?

1,4 The change in position over time. Define motion.

1,5 Any large distance Example: one country to another When do we use kilometers?

2,1 The rate of change of velocity with time. A car increasing speed to 60 m/h while turning to the left Define acceleration. Give an example of acceleration

2,2 m/s2 Which SI unit do we use for acceleration?

2,3 It would have a zero slope made from a horizontal line. What would a graph on a coordinate grid look like if we wanted it to represent no acceleration?

2,4 It must include distance, speed, and direction -Example -12 m/s2 North What is acceleration vector? Give an example.

2,5 Subtract the initial velocity from the final velocity and then divide by the change in time. How do you find average acceleration of an object?

3,1 The movement in a circular direction at a constant speed. Example: an object moving in a circle at 15 m/s What is centripetal acceleration? Give an example

3,2 A force exerted during contact between objects is a contact force./Friction is an example of contact force between two surfaces What is contact force? Give an example of contact force.

3,3 The tendency of a moving object to continue moving at the same velocity unless an unbalanced force acts on it. What is inertia?

3,4 -This is when forces can act on each other from a distance An example is gravity or a magnet What is an action-at-a-distance force and give an example.

3,5 Add them together if they are moving the same direction and subtract them if they are moving in different directions. How do you find net force?

4,1 -Balanced forces are exerted on a single object whereas action-reaction forces are exerted on different objects What is the difference between a balanced force and an action-reaction force?

4,2 If two objects have a large mass and are close together. How do you know if something has a strong gravitational force?

4,3 F = mg / force = mass x gravity How do you find gravitational force?

4,4 Orbit describes both the act of an object circling in space because the object’s gravitational pull and the path the orbiting object takes. Define orbit.

4,5 Gravitational force depends on both mass and distance What does the gravitational force depend on.

5,1 - the force that pulls all objects toward one another Define gravity.

5,2 - free fall has no other forces causing it to accelerate What is free fall?

5,3` Air resistance refers to a force that acts against relative motion of an object through a liquid or gas. Define air resistance

5,4 -Air resistance causes a sky diver to slow down. Give an example of air resistance.

5,5 • increase in mass does increase the resulting gravitational force • *decrease in distances does increase the gravitational force between the objects • . • *gravity does act across all distances What do we know to be true about gravitational force?

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