An object is dropped from rest. Which of the five following graphs correctly represents its motion? The positive direction is taken to be downward.
A) I
B) II
C) III
D) IV
E) V

Question

An object is dropped from rest. Which of the five following graphs correctly represents its motion? The positive direction is taken to be downward. 
A) I 
B) II 
C) III 
D) IV 
E) V

Quizplus · Accepted Answer

Graph II correctly represents the motion of an object dropped from rest. The object initially has zero velocity and experiences a constant acceleration due to gravity in the downward direction. This results in a linear increase in velocity and a quadratic increase in displacement over time, as shown in Graph II. The other graphs either show incorrect directions of motion, non-constant acceleration, or non-linear relationships between velocity and displacement.

An Object Is Dropped from Rest