Independent Review Forces and Motion

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# Independent Review Forces and Motion - PowerPoint PPT Presentation

## Independent Review Forces and Motion

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##### Presentation Transcript

1. Independent ReviewForces and Motion

2. Which of Newton’s Laws does the following best describe? 1. A golfer swings the clubs and hits the golf ball to the green. 2nd Law!!!

3. Which of Newton’s Laws does the following best describe? 2. The Earth revolves around the sun about every 365 days. 1st Law!!!

4. Which of Newton’s Laws does the following best describe? 3. A boat pulls a skier across a lake. 2nd Law!!!

5. Which of Newton’s Laws does the following best describe? 4. A plate stays on the table as the table cloth is ripped off. 1st Law!!!

6. Which of Newton’s Laws does the following best describe? 5. A person walks up the stairs. 3rd Law!!!

7. 4 N 9 N 6 N 6. What is the net force and direction of movement? 1 Newton to the right

8. 8 N 6 N 2 N 7. Balanced or Unbalanced???

9. 8. The figure below shows two equal forces acting on a box. The box is seen from above. In which direction will the box move? Southwest

10. 9. Which graph to the right shows an object that is NOT MOVING? Graph C

11. 10. Which graph to the right shows an object that is moving at a CONSTANT SPEED? Graph B

12. 11. Which of the graphs to the right shows an object that is SPEEDING UP? Graph B

13. 12. Which of the graphs to the right shows an object that is moving at a CONSTANT SPEED? Graph D

14. 13. Which of the graphs to the right shows an object that is SLOWING DOWN? Graph C

15. 14. Which of the graphs to the right shows an object that is SPEEDING UP and SLOWING DOWN back and forth? Graph A

16. 15. Name ALL the graphs to the right shows an object that is accelerating? Graphs A, B, and C.

17. 16. The graph to the right shows the motion of a cat over time. What was the cats average speed? 0.8 m/s

18. 17. The graph to the right shows the motion of a cat over time. During which interval does it show the cat was moving the FASTEST? • Between 0 and 40 seconds. • Between 40 and 60 seconds. • Between 60 and 100 seconds.

19. 18. The graph to the right shows the motion of a cat over time. During which interval does it show the cat was STATIONARY? • Between 0 and 40 seconds. • Between 40 and 60 seconds. • Between 60 and 100 seconds.

20. 19. The graph to the right shows the motion of a cat over time. During which interval does it show the cat was moving the SLOWEST? • Between 0 and 40 seconds. • Between 40 and 60 seconds. • Between 60 and 100 seconds.

21. 20. The graph to the right shows the motion of a cat over time. What is the cat’s average speed for the first 40 seconds of the trip? 0.5 m/s

22. 21. What is the acceleration of the above box? 45 Newtons of force 10 kilograms 4.5 m/s2

23. 22. A 12x12 moving box was loaded into a moving truck. If it took 800 joules to get the box 5 meters to the truck, how much force was applied to the box? F = 160 Newtons

24. 23. A 12 kg ball was kicked and hit another student. The ball accelerated at 4 m/s2. How much force did the student take on impact? F = 48 Newtons

25. 24. A student lifted a book weighing 120 Newtons off the ground 1.5 meters. How much work did the student do? W = 180 joules

26. 25. A roller coaster is pulled up the first hill with a force of 225 N. It uses 18,000 joules of energy to get the roller coaster up the hill. How tall must the first hill of the roller coaster be? d = 80 meters

27. 26. Tommy hit a golf ball with a force of 1125 Newtons and it gave the ball an acceleration of 45 m/s2. What is the mass of the golf ball? m = 25 grams