Test-Taking Tip
When answering a question with a graph, keep these tips in mind:
Read the question thoroughly to identify what the question is asking.
Study the name of the graph, if applicable. This may help you identify what information is available from the graph.
Carefully examine the graph and take note of the axes labels.
Identify the scale of the axes.
Recall information, equations, definitions, relationships, and so forth that may be required to interpret the graph. For example, the slope of a distance-time graph is the speed of the object.
Once you have chosen your answer, check it against the graph.
The graph above depicts motion in a straight line. During which time periods does acceleration occur?
0 s-2 s only
0 s-2 s and 6 s-8 s only
16 s-18 s only
0 s-2 s, 6 s-8 s, and 16 s-18 s only
Acceleration occurs during the entire time period shown.
(Answer: D)
A delivery truck driver's round-trip route from the warehouse takes her 3 km east, then 1 km north, then 3 km west, and then 1 km south. Which of the following statements is FALSE?
The displacement of the round trip is zero.
The distance of the round trip is 8 km.
After driving 3 km east, the magnitude of the distance and displacement are the same.
After driving 3 km east and 1 km north, the magnitude of the distance and displacement are the same.
none of the above
A runner completes a 10.0-km race in exactly 30 minutes. What is the runner's average speed in km/h? (60 minutes = 1 hour)
30.0 km/h
20.0 km/h
15.0 km/h
10.0 km/h
5.00 km/h
Which of the following is NOT a vector quantity? velocity
(B) displacement
distance
acceleration
none of the above
Based on the speed-time graph shown at the left, what is the acceleration during the first 2 seconds?
1 m/s2
2 m/s2
4 m/s2
5 m/s2
10 m/s2
A race car drives around a circular race track at constant speed. Which of the following statements is TRUE?
A speed-time graph of the car's motion would be a horizontal line.
A distance-time graph of the car's motion would be a straight line with a positive slope.
The velocity of the car is constantly changing.
The car is constantly accelerating.
all of the above