Unit 3 Force & Motion Test Review Worksheet

Name ______________________________________ Period ______ Date _______________________
Unit 3 Force & Motion Test Review Worksheet
Complete all of the questions on this worksheet by the midpoint of class on Thursday, November 1, 2012. Most of the answers
to these questions should be in your notebook; the page numbers for each question are for the 8 th grade science book. The
summative grade test on this material is to be given on Friday, November 2, 2012. Students who fail this test and scored
below average on the MAP test in physical science will automatically be scheduled for mandatory tutorials!
1. What is “distance”? (p.154) ________________________________________________________
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2. What is “displacement”? (p.154) ____________________________________________________
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3. What is the difference between “distance” and “displacement”? (p.154) ____________________
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4. If you walk 100 meters forward, and 35 meters backward towards your starting point, what is
your distance and displacement? (p.154) _____________________________________________
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5. What is “speed”? State the formula for speed. (p.155) __________________________________
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6. What is “velocity”? State the formula for velocity. (p.157) _______________________________
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7. How is “speed” different from “velocity”? (pp.155, 157) _________________________________
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8. What is “acceleration”? State the formula for acceleration. (pp.157-58) ____________________
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9. If an object is accelerating, what three different things could be happening to its motion>?
(p.159) _________________________________________________________________________
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10. Describe the motion of an object that has negative acceleration. (p.159) ____________________
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11. If a plane is flying at a constant speed but turning to a new direction, what is happening to its
velocity and acceleration? (p.159) ___________________________________________________
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12. A car travels a distance of 240 kilometers in 4 hours. What is its speed in kilometers per hour?
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13. A car has a displacement of 400 kilometers to the east in 5 hours. What is its velocity in
kilometers per hour? _____________________________________
14. If a car is traveling at a constant speed of 80 kilometers per hour (km/h), how many hours will it
take for the car to travel a distance of 480 kilometers? _________________________________
15. If a car moves at a speed of 60 km/h for 4 hours, what distance will it travel?
______________________
16. If the velocity of a car changes from 10 meters per second (m/s) to 70 m/s in 4 seconds, what is
the acceleration over that 4 second period? ______________________________
17. If the velocity of a car changes from 80 km/hr to 0 km/hr in 4 seconds, what is the acceleration
over that 10 second period? _________________________
18. In a graph showing distance travelled on the y-axis and time on the x-axis, what does each of the
following graphed lines indicate? A horizontal line: ____________________________________
A straight line with constant slope: __________________________________________________
A straight line with a shallow upward slope: ___________________________________________
A straight line with a steep upward slope: _____________________________________________
A upwardly curving line: ___________________________________________________________
19. What is a force? (p.160) ___________________________________________________________
20. What two separate measurements are needed to describe a force? (p.160) __________________
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21. State Newton’s First Law of Motion. (p.161) ___________________________________________
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22. How can the need for seat belts in cars be explained using Newton’s First Law of Motion? (p.161)
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23. What is inertia? How are mass and inertia related? (p.162) ______________________________
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25. What are balanced forces? (p.162) __________________________________________________
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26. How do balanced forces affect the motion of objects? (p.162) _____________________________
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27. Describe all of the forces acting on a car moving at a constant velocity. (p.162) _______________
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28. What are unbalanced forces? (pp.162-63) ____________________________________________
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29. How do unbalanced forces affect the motion of an object? (p.163) _________________________
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30. State Newton’s Second Law of Motion. (p.164) _________________________________________
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31. State the formula for Newton’s Second Law of Motion in its three possible forms, solving for
mass, acceleration or force. (pp.164-65) ______________________________________________
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32. State the formula for
Newton’s 2 nd Law of Motion,
using the triangle format.

33. What are the standard metric units of measurement in the formulas for Newton’s Second Law of
Motion? (p.165) _________________________________________________________________
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34. If a force is applied to three different objects, each with a different mass, which of the objects
will accelerate the fastest? _________________________________________________________
35. What is the amount of acceleration caused by the Earth’s gravity near the Earth’s surface?
(p.166) _________________________________________________________________________
36. What is “weight”? (p.166) _________________________________________________________
37. What is friction? (p.167) ___________________________________________________________
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38. What is air resistance? How does air resistance slow the fall rate of a parachute? (p.170) _______
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39. State Newton’s Third Law of Motion. (p.172) __________________________________________
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40. State the action and reaction forces in a rocket taking off from a launching pad. (p.172) ________
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41. An object with a mass of 5.0 kg accelerates 8.0 m/s 2 when an unknown force is applied to it.
What is the amount of the force? ______________________
42. An object accelerates 2.0 m/s 2 when a force of 12.0 newtons is applied to it. What is the mass of
the object? ___________________________
43. An object with a mass of 3.0 kg has a force of 9.0 newtons applied to it. What is the resulting
acceleration of the object? ________________________
44. If a man with a mass of 100 kg travels to the Moon, where the acceleration due to gravity is 1.5
m/s 2 , what will his weight be on the Moon? ___________________________