Question Detail

PHY 101 Kinematics in One Dimension Objective Question

Question

The area under an acceleration-time (a-t) graph over a given time interval represents the
Options
A displacement of the object.
B average velocity of the object.
C change in position of the object.
D change in velocity of the object.
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

The integral of acceleration with respect to time gives the change in velocity. Graphically, the area under an acceleration-time curve between two times is equal to the integral ∫a dt, which equals Δv, the change in velocity during that interval.

Hint

Consider the relationship a = dv/dt. Rearranging, dv = a dt. The sum of small changes in velocity (dv) is the area under the a-t curve.

Question Info