Name: 
 

12.3 Test



Modified True/False
Indicate whether the statement is true or false.  If false, change the identified word or phrase to make the statement true.
 

 1. 

On a distance vs. time graph, constant speed is indicated by a straight, horizontal line. _________________________

 

 2. 

The speed of an object can found on a distance vs. time graph by calculating the area under the line of the graph. _________________________

 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 3. 

The data for a runner is used to produce a graph of speed vs. time. If the line of the graph is a straight horizontal line, this indicates the runner is:
a.
running with constant speed.
b.
running with increasing speed.
c.
running with decreasing speed
d.
motionless; not running.
 

 4. 

The graph below represents the motion ball rolling across the floor of a room. The average speed of the ball is:

mc004-1.jpg
a.
0.5 m/s
b.
2 m/s
c.
5 m/s
d.
50 m/s
 

 5. 

The graph represents the motion of two cars, A and B. During the time from t = 0 seconds to t = 5 seconds, car A is:

mc005-1.jpg
a.
moving with constant speed.
b.
moving with increasing speed.
c.
moving with decreasing speed.
d.
motionless; not moving.
 

 6. 

The graph below was created from data taken as a runner was warming up for a track meet. The interval during which the runner is moving fastest is:

mc006-1.jpg
a.
AB
b.
BC
c.
CD
d.
DE
 

 7. 

The graph represents the motion of a cyclist as he begins to pedal from a stop sign at an intersection.

mc007-1-123.jpg

The total distance covered by the cyclist during the first four seconds is:
a.
0.5 m
b.
2 m
c.
4 m
d.
8 m
 
 
The graph below represents the motion of a cart rolling across the floor.

nar001-1.jpg

Figure 12-1A
 

 8. 

According to the graph in Figure 12-1A, the speed of the cart at t = 5 seconds is:
a.
0.0 m/s
b.
2.0 m/s
c.
4.0 m/s
d.
5.0 m/s
 

 9. 

According to the graph in Figure 12-1A, during the first 4 seconds, the car is:
a.
motionless; not moving.
b.
moving with constant speed.
c.
moving with increasing speed.
d.
moving with decreasing speed.
 

 10. 

The graph below represents the motion of an object. The speed of the object is changing during interval:

mc010-1.jpg
a.
AB
b.
BC
c.
CD
d.
DE
 

 11. 

The data for a runner is used to produce a graph of position vs. time. If the line of the graph is a straight horizontal line, this indicates the runner is:
a.
running with constant speed.
b.
running with increasing speed.
c.
running with decreasing speed.
d.
motionless; not running.
 

 12. 

The graph shows the distance covered by a battery operated car plotted against time.

mc012-1-123.jpg

The distance covered by the car from time = 2 seconds to time = 6 seconds is:
a.
2 m
b.
4 m
c.
6 m
d.
8 m
 

Short Answer
 

 13. 

Write the equation for calculating the slope of the line of a position vs. time graph.
 

 14. 

Becca and Sam each walk a 100-meter course on their school’s track. Each of their walks are plotted on a single distance vs. time graph. If you didn’t have a chance to watch them in person, how could you use the distance vs. time graph to figure out who walked faster?
 

Problem
 

 15. 

The graph represents the motion of two cars, A and B. During the first 5 seconds, which car is moving faster? How do you know?

pr015-1-123.jpg
 

 16. 

The graph below represents the motion of two cars, A and B, moving on a straight track.

pr016-1.jpg

Calculate the distance car B moves in 60 seconds.
 

 17. 

The distance vs. time graph below represents the position of an object moving in a straight line. Calculate the speed of the object from 2 seconds to 4 seconds.

pr017-1-123.jpg

For full credit, write an equation, substitute in the equation with units, and give an answer labeled with units.
 



 
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