1.
The jogger is at rest during which interval?
Correct Answer
C. DE
Explanation
During the interval DE, the jogger is at rest.
2.
During which of the following intervals does the jogger have a constant positive velocity?
Correct Answer
A. BC
Explanation
The jogger has a constant positive velocity during the interval BC because the jogger is moving in the positive direction without changing their speed.
3.
During which interval is the magnitude of the jogger’s acceleration the greatest?
Correct Answer
D. EF
Explanation
The magnitude of the jogger's acceleration is the greatest during the interval EF. This can be inferred because EF is the steepest part of the graph, indicating a rapid change in velocity. The greater the change in velocity over a given time interval, the greater the acceleration. Therefore, the magnitude of the jogger's acceleration is the highest during the interval EF.
4.
During which of the following intervals is the speed of the jogger decreasing?
Correct Answer
B. AB and CD
Explanation
The speed of the jogger is decreasing during the intervals AB and CD. This means that the jogger is slowing down during these intervals.
5.
During which of the following intervals does the jogger have a constant negative velocity?
Correct Answer
D. FG
Explanation
The jogger has a constant negative velocity during the interval FG because the velocity is negative and remains constant throughout this interval. This means that the jogger is moving in the opposite direction of the positive axis and at a constant speed.
6.
What does the graph illustrate about acceleration?
Correct Answer
A. The acceleration varies.
Explanation
The graph illustrates that the acceleration is not constant throughout the given time period. It shows that the acceleration changes in magnitude and direction, indicating that it varies.
7.
In the graph, how does the acceleration at A compare with the acceleration at B?
Correct Answer
C. The accelerations at A and B are each zero.
Explanation
The graph shows that both the acceleration at A and the acceleration at B are zero. This means that there is no change in velocity at either point A or point B. The absence of acceleration indicates that the object is either at rest or moving with a constant velocity at both points.
8.
Over which of the following intervals indicated on the graph is the object speeding up?
Correct Answer
C. Interval 1 and Interval 4 only
Explanation
The object is speeding up during Interval 1 and Interval 4 only because in these intervals, the velocity of the object is increasing. This can be observed from the graph where the slope of the line representing the object's velocity is positive during these intervals.
9.
Over which of the following intervals on the graph is the velocity constant?
Correct Answer
C. Interval 2 and Interval 5 only
Explanation
The velocity is constant when the graph is a horizontal line, indicating that the object is moving at a constant speed. In the given options, Interval 2 and Interval 5 are the only intervals where the graph shows a horizontal line, suggesting that the velocity is constant during these intervals. Therefore, the correct answer is Interval 2 and Interval 5 only.
10.
Over which of the following intervals indicated on the graph is the object traveling east?
Correct Answer
B. Interval 1, Interval 2, and Interval 3 only
11.
During which of the following intervals does the jogger slowing down?
Correct Answer
B. CD
Explanation
The jogger is slowing down during the interval CD.
12.
During which of the following intervals does the jogger travel south?
Correct Answer
D. FG
Explanation
The jogger travels south during the interval FG because the given options represent different intervals. Since FG is the only interval that indicates a southward direction, it can be inferred that the jogger travels south during that interval.
13.
During which of the following intervals does the jogger speeding up?
Correct Answer
D. EF
Explanation
The jogger is speeding up during the interval EF because the letters represent points along a path. The jogger is moving from point E to point F, indicating an increase in speed.
14.
Over which of the following intervals indicated on the graph is the object slowing down?
Correct Answer
B. Interval 3 and Interval 6 only
Explanation
The object is slowing down during Interval 3 and Interval 6 only because the graph shows a decrease in velocity during these intervals. This indicates that the object is experiencing deceleration or negative acceleration, which means it is slowing down.
15.
Over which of the following intervals indicated on the graph is the object traveling north?
Correct Answer
B. Interval 1, Interval 2, and Interval 3 only
16.
Over which of the following intervals indicated on the graph is the object traveling south?
Correct Answer
A. Interval 4, Interval 5, and Interval 6 only
17.
Over which of the following intervals indicated on the graph is the object traveling west?
Correct Answer
A. Interval 4, Interval 5, and Interval 6 only
Explanation
The object is traveling west during Interval 4, Interval 5, and Interval 6 only because in these intervals, the object's position on the graph is decreasing from left to right, indicating a westward direction of travel.