2. Force and Motion Review

3. 1. After studying each graph, determine what the line shape could be revealing to you concerning the movement of a soup can down a ramp. Distance (meters) A A As the can rolled down the ramp the speed increased.

4. Distance (meters) B B As the can rolled down the ramp the speed decreased.

5. Distance (meters) C C As the can rolled down the ramp the speed stayed constant.

6. Distance (meters) D D As the can rolled down the ramp the speed stayed constant, then increased, then stayed constant again.

7. Which of the graphs shows that one of runners started 10 yards further ahead of the other? Graph A

8. Which person ran faster? W X Person X

9. What is the acceleration of person X between 2 and 4 seconds? W X Acceleration is 0 m/s²

10. What is the net force on the box below? Which direction will it move? 5 N 13 N Net force is 8 N moving to the left.

11. You are running the 400m oval track around the football field. Your first lap was completed in 3.3 minutes, the second lap in 0.55 minutes. Explain your 2 laps in terms of speed, velocity and acceleration. Speed 1 st lap = 121.2m/min Speed 2 nd lap = 727.3m/min Velocity 1 st lap = 121.2m/min counterclockwise Velocity 2 nd lap = 727.3m/min counterclockwise Acceleration occurred going into the curve and emerging from the curve. Acceleration also occurred from the 1 st lap to the 2 nd lap.

12. The velocity (speed) of a 40 kg object increases from 20 m/s to 30 m/s in 2 seconds. What is the acceleration of the object during these 2 seconds? 5 m/s²

13. A toy car with a mass of 4g and a truck with a mass of 20g were pushed with the same amount of force. Which vehicle’s velocity will increase the most? How much more acceleration? The toy car 5x faster

14. Draw the 2 formula triangles for Force and Speed. Explain them.

15. When a car suddenly stops at a red light, a book lying on the car seat slides forward. Why does the book continue to move forward? The book’s inertia causes it to continue moving.