Name_________________________________ Period_______________ Date______________________
Force & Motion Study Guide
1.
2.
3.
Name_________________________________ Period_______________ Date______________________
4. Linda collected the data shown here during an experiment with a vehicle she
designed and built in class. Based upon the information shown in the chart below,
describe the purpose of Linda’s experiment. What are two things that could
be the dependent variable in her experiment?
The purpose of Linda’s experiment is for her to see if the speed of the car will change if she
changes the height of the ramp. She will measure the distance the car traveled and divide that
by the time the car took to travel that distance.
Control Factors
Independent
Variable
Height of the
ramp
Ramp Material
Force
# of Wheels
Group
#1 (control)
wood
3N
4
20 cm
#2 (experimental)
wood
3N
4
30 cm
#3 (experimental)
wood
3N
4
40 cm
Student
Cameron L.
Kevin K.
McKenzee D.
Daimon C.
Alex S.
5K bike ride for
Mrs. Finley’s students
Distance (kilometers)
5 km
5 km
5 km
5 km
5 km
Time (hours)
0.75
0.74
0.65
0.95
1.3
5. Based on the chart above, which cyclist has the fastest average speed?
McKenzee D.
6. Based on the chart above, which cyclist has the slowest average speed?
Alex S.
7. Based on the chart above, what is the average speed of the fastest cyclist? Show
your work!
S=d/t; S=5/0.65= 7.69 km/h
8. What two things correctly describe the velocity of an object?
The speed of the object and its direction.
9. Describe the term motion. Also, how can we tell an object is in motion?
A change in the position of an object. We can tell it is in motion because of the reference point.
10. A ship was traveling across the Atlantic Ocean. It traveled 2,300 kilometers at a
rate of 60 kilometers per hour. How long did it take the ship to travel this distance?
t= d/S; t=2,300/60= 38.33 h
Name_________________________________ Period_______________ Date______________________
11. Which of the following best represents acceleration as a presented on a graph?
A. motion change vs. time
C. speed change vs. time
B. distance change vs. time
D. velocity change vs. time
12. To calculate an object’s average acceleration, what three things do you need to
know? Final velocity, starting velocity, & the time it takes to get from starting to final
velocity
13. A roller coaster is traveling down a hill at 15 m/s. At the bottom of the hill, it is
traveling 25 m/s. It takes 15 s to get from the starting velocity to the final velocity.
What is the coaster’s average acceleration?
0.67 m/s² downhill
14.
Why is it more helpful to know a tornado’s velocity rather than its speed?
Knowing the velocity will tell you the speed and direction of the tornado. So you not only
know how fast it is going, but where it is going.
15. Jason is chasing Max because he ate the last Oreo in the pantry. I collect the
following data: 20 m/s at 0 s, 15 m/s at 1 s, 10 m/s at 2 s, 5 m/s at 3 s, 2.5 m/s at 4
s, 1 m/s at 5 s, and 0 m/s at 6 s. Present this data in a line graph. Explain what the
data tells you.
Every second, Jason’s speed decreased by 5 m/s and then by half. He was out of shape or he
caught Max!
Jason's Speed
25
speed (m/s)
20
15
speed (m/s)
10
5
0
1
2
3
4
5
6
7
time (s)
16.
Which of the following is NOT an example of acceleration?
a. A person jogging at 3 m/s along a winding path
b. A car stopping at a stop sign
c. A cheetah running 27 m/s east
d. A plane taking off
17. The distance between Memphis and Nashville is about 344 km. How long will it
take a car traveling with an average speed of 85 km/h to drive from Memphis to
Nashville?
a. less than 1 hour
b. about 2 hours
c. about 4 hours
d. more than 6 hours
Name_________________________________ Period_______________ Date______________________
18.
Time (seconds)
Distance (meters)
0
0
1
96
2
192
3
288
4
384
During a field experiment about speed, a scientist created the chart above, which shows
distance and time measurements for a racing car in motion on the straight section of a
racing track. What is the racing car's speed?
96 m/s
19.
What is the racing car’s acceleration?
0 m/s2
20.
The graph above describes the motion of two different balls- ball A and ball B. According
to the graph, which of the following statements is true?
a. The velocity of ball A is increasing over time at a constant acceleration.
b. The velocity of ball B is increasing over time at a constant acceleration.
c. The velocity of ball A is decreasing over time at a constant acceleration.
d. The velocity of ball B is decreasing over time at a constant acceleration.