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FORCE AND MOTION REVIEW
1. A fork is an example of what type of simple machine?
2. Explain your answer in question #1
3. A roller skate is an example of what type of simple machine?
4. Explain your answer in question #3
5. A ramp is an example of what type of simple machine?
6. Explain your answer in question #5
7. A see saw is an example of what type of lever?
8. Explain your answer in question #7
9. Why would you use a pulley?
10. What simple machine would you use to hold something together?
11. The example above is what type of lever?
12. Which of the following statement is true for the above picture.
a) b is the fulcrum, c is the resistance, a is the effort
b) b is the resistance, c is the fulcrum, a is the effort
c)b is the fulcrum, a is the effort, c is the resistance.
d) b is the resistance, a is the fulcrum, c is the effort
13. A simple machine that is actually a kind on inclined plane is a
a) pulley
b) wedge
c) gear
d) balance
14. A knife is an example of a (an)
a) Inclined Plane
b) Wedge
c) ramp
d) pulley
15. Decreasing the slant of an inclined plane increases its.
a) effort force
b) Mechanical Advantage
b) Power
d) Work output
16. Is the person doing work when pushing a 1000 N car 10 m? Explain your answer.
17. Is the person doing work when lifting a rock off the ground? Explain your answer.
18. Is the person doing work when holding a book in your hands? Explain your answer.
19. Is the person doing work when pushing hard on a brick wall? Explain your answer.
Directions: Use the formula W = F x D to solve the following problems. Be sure to WRITE THE FORMULA. AND SHOW ALL WORK!
20. How much work is done when a 5 N force moves a block 4 m?
21. How much work is done when a 100 N force moves a block 5 m?
22. Fred applies 350 N of force to move his stalled car 4 m, how much work did Fred do?
23. You move a 25 N object 5 m. How much work did you do?
24. You use 35 J of energy to move a 7 N object. How far did you move it?
25. How far will 350 J raise a block weighing 7 N?
26. Which is more work, pushing with 115 N over 15 m or lifting 20 N 10 m?
Directions: Use the formula S = D / T to solve the following problems. Be sure to WRITE THE FORMULA. AND SHOW ALL WORK!
27. A boat is traveling at a speed of 20 km per hour. It has to travel a distance of 200 km. How long will it take?
28. A car takes four hours to reach its destination. The distance was 340 miles. What was its speed?
29. A car travels 300 km in six hours. What is the speed of the car?
30. What is the speed of a jet plane that flies 7200 km in 9 hours?
31. The speed of a cruise ship is 50 km/hr. How far will it travel in
14 hours?
32. The speed of a rocket is 16,000 km/hr, and it will take 66 hours
to complete its mission. How far will it go?
33. What is the speed of a cyclist that travels 60 km in 2 hours?
34. Which of Newton’s Laws describes the amount of force applied to accelerate an objects mass?
35. For every ______________ there is an equal and opposite _________________.
a. reaction, action
b. action, action
c. reaction, reaction
d. action, reaction
36. The amount of force needed to move an object is measured in…
a. Newton’s
b. Kilometers
c. Seconds
d. Grams
37. A person is measured on the moon, and on Earth. Which statement would be true?
a. The person’s mass on Earth would be double on the moon.
b. The person’s mass on the moon, would be twice that on Earth.
c. The person would have mass on Earth but not on the moon.
d. the mass would be the same on the moon as it is on Earth.
38. How could you tell if a moving object is receiving an unbalanced force?
a. It might speed up.
b. It might slow down
c. It might change direction.
d. It might do any of the three things mentioned above.
39. Explain which of Newton’s Laws would demonstrate a ball rolling to a wall then stopping.
40. Why do you lean towards the left when a car turns right?
a. because of inertia
b. because of gravity
c. because of speed
d. because of velocity
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