Question 15 Answer and Explanation _ACT 2005 Form 56A Science Section

15. The graphs in Set 2 could also represent which of the following descriptions of the motion of a car traveling on a street?

A. A car travels at a constant velocity for a period of time, then decreases in velocity until it reaches a specific velocity, and continues traveling at that velocity.

B. A car is stopped along a curb. It then increases in velocity until it reaches a specific velocity, and continues to travel at that velocity.

C. A car travels at a constant velocity for a period of time, then increases in velocity until it reaches a specific velocity, and continues traveling at that velocity.

D. A car is stopped at an intersection. It then increases in velocity until it reaches a specific velocity, then immediately decreases in velocity to come to a second stop.

Answer and Explanation

Your Answer is

Correct Answer is D

Explanation

Locate set 2 in the second column, and find that the motorcycle has been accelerating and then decelerating from the second picture, which is in line with the description of option D (you can also judge it by the acceleration in the third picture)