1. An object used as a reference point to determine motion should be

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Presentation transcript:

1. An object used as a reference point to determine motion should be accelerating. stationary. decelerating. changing direction.

2. Members of the Fairview Track Club are running a 1. 5 km race 2. Members of the Fairview Track Club are running a 1.5 km race. What is the distance of the race in meters? 0.15 m 15 m 150 m 1,500 m

3. Your father is driving to the beach 3. Your father is driving to the beach. He drives at one speed for two hours. He drives at a different speed for another two hours and a third speed for the final hour. How would you find his average speed for all five hours? Divide the total driving time by the total distance. Multiply the total driving time by the total distance. Divide the total distance by the total driving time. Subtract the total driving time from the total distance.

4. Sandra rides a train a distance of 150 kilometers 4. Sandra rides a train a distance of 150 kilometers. The entire trip takes a total of 3 hours. What is the average speed of the train? 450 km/h 150 km/h 75 km/h 50 km/h

5. Which of the following is NOT needed to determine the velocity of a moving truck? The mass of the truck The distance it travels The time it takes to travel that distance The direction in which it is traveling

6. Two objects travelling at the same speed have different velocities if they start at different times. travel different distances. have different masses. move in different directions.

7. An object accelerates if its Speed remains constant. Direction changes. Mass remains constant. Motion can be plotted on a graph.

8. A girl is running at 1 m/s and then slowly accelerates to 2 m/s 8. A girl is running at 1 m/s and then slowly accelerates to 2 m/s. If it took 3 seconds for this change in velocity to take place, what was the girl’s acceleration in m/s2? 0.33 m/s2 0.67 m/s2 1.5 m/s2 3.0 m/s2

9. What happens to the motion of an object when the forces are balanced? The motion changes. The motion does not change. The motion speeds up. The motion slows down.

10. What happens to an object if the forces acting upon it are unbalanced? Its motion will not change. The object will come to a stop. The net force will be zero. Its motion will change.