Download Chapter 6 Review

Name________________________
Hour__________
Chapter 6 Review
Section 6.1
1. Define Force. ___________________________________________________________________________
2. Define Friction. _________________________________________________________________________
3. What are the four types of friction?
a. _____________________________________________________
b. _____________________________________________________
c. _____________________________________________________
4. State Newton’s first Law. _________________________________________________________________
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5. What will happen to an object’s motion if the net force is equal to zero? ___________________________
6. What will happen to an object’s motion if the net force is NOT equal to zero? _______________________
7. What can happen to an object’s motion if the forces are unbalanced?
a. ___________________________________________________
b. ___________________________________________________
c. ___________________________________________________
8. When the forces on an object are unbalanced, in what direction will the object move?
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9. Define inertia. __________________________________________________________________________
10. How are mass and inertia related? __________________________________________________________
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11. Two objects are picture below. Answer questions a-c about the objects.
a. Which object has the most inertia? How do you know? ___________________________________
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b. Which object will be easiest to start moving? How do you know? ___________________________
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c. Once moving, which object will be the most difficult to stop? How do you know? ______________
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12. Use Newton’s first law to explain what you feel in a car when the car is stopped and then suddenly starts
moving. You should have the word inertia somewhere in your explanation. ________________________
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Section 6.2
13. What is the SI Unit for force? ____________________________________
14. What is a newton? _______________________________________________________________________
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15. State Newton’s Second Law. _______________________________________________________________
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16. List the three main ideas involving newton’s second law:
a. ________________________________________________________________________________
b. ________________________________________________________________________________
c. ________________________________________________________________________________
17. You are pushing a cart along a level path. What will happen to the cart’s acceleration if the mass in the
cart is increased? _______________________________________________________________________
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18. You need to move two carts of the same mass. You push the first cart with a force of 10 N. You push the
second cart with a force of 20 N. Which cart will accelerate more? ________________________________
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19. Bobby is using a spring-loaded dart gun to practice target shooting. His three guns each have a spring that
shoots a dart with a force of 100, 200, and 300 N. Which spring will cause a dart to accelerate the most?
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20. What is equation for newton’s second law? __________________________________________________
21. Fill out the following table with the missing information.
If you want to
find…
Use the equation…
Your answer will be in
units of…
a
(acceleration)
F
(force)
m
(mass)
22. A force of 25 N acts on a cart with a mass of 15 kg. What is the acceleration of the cart?
23. Karry pushes on a cart with a mass of 5 kg. She measures the acceleration of the cart to be 0.75 m/s2.
With what force did Karry push on the cart?
Section 6.3
24. State Newton’s third law. _________________________________________________________________
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25. How do forces compare in size in action-reaction force pairs? ____________________________________
26. How do forces compare in direction in action-reaction force pairs? ________________________________
27. What is an action-reaction force pair? _______________________________________________________
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28. Do action and reaction forces act alone or at the same time? ____________________________________
29. If action-reaction forces are equal in size, but opposite in direction why do they not cancel out? ________
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30. Identify the action and reaction force in the following situations:
a. You throw a baseball
Action: ________________________________ Reaction:________________________________
b. A large boulder falls to earth.
Action: ________________________________ Reaction: ________________________________
c. You use your arms to swim in a pool.
Action: ________________________________ Reaction: ________________________________
d. You are walking along a level path.
Action: ________________________________ Reaction: ________________________________
31. Explain why Newton has more acceleration than the elephant in the picture below even though there are
equal amounts of force acting on each one. Assume the elephant has a much larger mass than Newton.
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Match Game: In the blank provided write 1 for 1st law, 2 for 2nd law, or 3 for 3rd law depending on which law best
explains the situation.
32. A notebook sits on a desk, unmoving. _____________
33. A semi truck takes longer to speed up than a small car. _____________
34. You skate along an ice rink because of the motion of your legs. _____________
35. In outer space, a comet will stay in a straight line path unless in encounters the sun. Then it will change
paths. _____________