Question

The velocity-time graph of a body is shown in fig. The ratio of average acceleration during the intervals OA and AB is:

Options

• 1

• `1/2`

• `1/3`

• 3

Answer 1

`1/3`

Explanation:

During OA, acceleration = tan 30° = `1/sqrt3 "m"//"s"^2`

During AB, acceleration = −tan 60° = `-sqrt3 "m"//"s"^2`

Required ratio = `(1//sqrt3)/sqrt3 = 1/3`