Question

A motorcycle starting from rest moves with uniform acceleration until it attains a speed of 30m/s after 15s. find its acceleration​

Answer 1

`a=2m/s^2`

Explanation: The formula for acceleration is
`a=(change\ in\ velocity)/(Total\ time)`.

Here the initial velocity is
`0m/s`. The object moves with uniform acceleration.

and the final velocity is
`30m/s`.

Time taken by the motorcycle
`=15s`

hence, we have,

`a=(final\ velocity-initial\ velocity)/(Total\ time)\\`

`a=(30-0)/(15)`

`a=(30)/(15)`

`a=2m/s^2`.

Hence, the acceleration is
`a=2m/s^2` .