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## Independent Review Forces and Motion

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**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!!!**Which of Newton’s Laws does the following best describe?**2. The Earth revolves around the sun about every 365 days. 1st Law!!!**Which of Newton’s Laws does the following best describe?**3. A boat pulls a skier across a lake. 2nd Law!!!**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!!!**Which of Newton’s Laws does the following best describe?**5. A person walks up the stairs. 3rd Law!!!**4 N**9 N 6 N 6. What is the net force and direction of movement? 1 Newton to the right**8 N**6 N 2 N 7. Balanced or Unbalanced???**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**9. Which graph to the right shows an object that is NOT**MOVING? Graph C**10. Which graph to the right shows an object that is moving**at a CONSTANT SPEED? Graph B**11. Which of the graphs to the right shows an object that**is SPEEDING UP? Graph B**12. Which of the graphs to the right shows an object that**is moving at a CONSTANT SPEED? Graph D**13. Which of the graphs to the right shows an object that**is SLOWING DOWN? Graph C**14. Which of the graphs to the right shows an object that**is SPEEDING UP and SLOWING DOWN back and forth? Graph A**15. Name ALL the graphs to the right shows an object that**is accelerating? Graphs A, B, and C.**16. The graph to the right shows the motion of a cat over**time. What was the cats average speed? 0.8 m/s**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.**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.**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.**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**21. What is the acceleration of the above box?**45 Newtons of force 10 kilograms 4.5 m/s2**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**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**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**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**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**The End!!!Please return the power point to the first**slide!!!