Force and Motion

Speed Graph Example
90
80
70
Distance (meters)
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90 100 110 120 130 140 150 160 170 180 190 200
Time (seconds)
A to B = 150 meters
B to C = 450 meters
C to D = 600 meters
D to E = 600 meters
E to F = 450 meters
F to G = 975 meters
G to H = 75 meters
C
A
H
G
D
B
N
E
F
Study Guide for Force and Motion test
TEST IS THURSDAY, SEPTEMBER 24TH! STUDY!!!
MOTION STUDY GUIDE
Know vocabulary terms for motion
Understand that motion = change in position, based on a frame of reference
Understand that speed is a measure of an object in motion, and velocity is the speed of an
object plus its direction
On a speed graph, you plot or graph distance (Y-axis) against time (X-axis)
Know difference between average speed, constant speed, and instantaneous speed
Know how to read and interpret a speed graph
Know what displacement is (straight-line distance from point A to point B, plus direction)
Know how to properly apply the units for:
speed (meters per second or m/s),
acceleration (meters per second per second or m/s2),
distance (meters or kilometers),
time (seconds or minutes or hours)
For example, if the question asks to calculate the speed of an object, your answer must include the unit for
speed. (Remember, if your answer does not include the correct units, it will be marked incorrect)
Know how to calculate average speed (total distance divided by total time)
FORCE STUDY GUIDE
Know vocabulary terms for force
Know what inertia is and how it relates to motion (more mass = more inertia, requiring greater force
to put into or stop motion)
Know Newton’s 1st law of motion (Law of Inertia – A body at rest tends to stay at rest, a body in motion tends to
stay in motion, unless acted on by an outside or unbalanced force)
Know the types of friction (static, sliding, rolling, fluid); Be able to rank them according to the amount of force it
takes to overcome them;
Examples – static friction = book on table, sliding friction = bicycle brake, rolling friction = bicycle tire rolling on
road, fluid friction = airplane moving through the sky
Know relationship between force, mass, and acceleration
Know how to draw and interpret a diagram of forces (using arrows to indicate magnitude and direction of force)
Be able to distinguish between balanced (no motion) and unbalanced (motion) forces
Know friction always OPPOSES motion and will eventually cause an object to slow down or stop
Review chapters 15 and 16, be sure you UNDERSTAND your vocabulary terms,
and review your worksheets.
Standard 8-5 Study Guide Answers
8-5.1
1. motion
2. position
3. reference point
4. distance
5. direction
6. right (10 m E)
7. displacement
8. speed
9. v = d/t
10. x
11. y
12. faster
13. flatter
14. zero
8-5.2
15. average speed
16. meters
17. Second
8-5.4
29. faster
30. more than
31. more
32. quickly
8-5.6
42. unbalanced force
43. mass
44. inertia
8-5.3
18. mass
19. distance
20. center
21. same
22. friction
23. opposite
24. static
25. sliding
26. reduces
27. space
28. fluid
8-5.5
33. magnitude (strength)
34. direction
35. balanced
36. zero or balanced
37. unbalanced
38. Magnitude size or strength
39. larger or greatest
40. added or combined
41. subtracted