Question

The figure shows the displacement-time graph of a body moving in a straight line. Which of the following shows the corresponding velocity-time graph?

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

We know that the slope of the displacement-time graph gives us the velocity.
From t = 0 to 5 seconds:
The slope of the x-t graph is constant. Thus, in this time interval velocity remains constant.
From t = 5 to 15 seconds:
The slope of the x-t graph is zero. Thus, in this time interval velocity becomes zero.
From t = 15 to 20 seconds:
The slope of the x-t graph is constant but negative. Thus, in this time interval velocity remains constant but it will be negative.