A Short Review

1. What are these two forces?

A

B

2. If this car is moving at a constant velocity, what kind of forces are acting on it?

3. What is the net force?

4. What is the acceleration of this person? (if it were a real free fall)

5. If it takes him 4 seconds to fall, how fast is he going just before he hits the ground?

6. What would have to do to get both tires to have the same acceleration?

7. What if you were to use the same force on each tire what would happen?

A

B

8.What are the forces like if an object is accelerating?

9.If this spider man is traveling downwards from 1m/s to 5m/s in 1s, what is it’s acceleration?

10.Explain how the ball was accelerating even if was going a constant 20m/s?

11.Describe its motion, note it is going at a constant speed.

12.What is it’s acceleration if it is now slowing down?

13.Uh oh, it just sped up! Is it accelerating?

14. When is acceleration positive?

15. When is it negative?16. What are 2 ways you can tell that objects have balanced forces acting on them?17.So balanced forces are ______ in size, and ____ in direction.

18. If the car does not look like it is moving what is your frame of reference?

19. Explain what must be happening if you jump up in the air in this moving truck but land farther back from where you originally jumped.

Mark is on a morning jog. His speed is represented in the graph.

20. At what rate of speed is Mark running between 4 min and 6 min? (In m/s)

Mark’s Morning Jog

21.According to this graph, what can you tell about Juan’s motion between 7 min and 11 min?