A body moves from rest with a constant ac- celeration. Which of the following graphs represents the variation of its kinetic energy (E) with distance travelled (x)?

Options

A.
B.
C.
D.

Answer

A

Explanation

Also, `v^(2) = u^(2) + ` 2as
= 2 as
`therefore E prop v^(2) prop ` S, as a is constant .
It is of the fonn y `prop ` x , which is the equation of a straight line passing through the origin, as shown in (a).