Question

This is a velocity versus time graph of a car starting from rest. If the area under the line is 10 meters: what is the corresponding time interval?
A. 2 seconds
B. 4 seconds
C. 5 seconds
D. 10 seconds
E. 15 seconds

Answer 1

Answer: The correct answer is option (D).

Explanation:

The area under the line is 10 meters that is displacement which means that area enclosed by the right angled triangle is 10 unit squares.

So, the it can be written as:

$\text{area of triangle}=\frac{1}{2}\times velocity\times time$

$10=\frac{1}{2}\times 2.0 m/s\times time$

$time =10 seconds$

Hence the, the correct answer is option (D).