Question

A bicycle rider increases her speed from 4 m/s to 15 m/s in 5 seconds. What is her acceleration? Round your answer to one decimal place.

Answer 1

Given:

The initial speed of the bicycle is,

`u=4\text{ m/s}`

The final speed of the bicycle is,

`v=15\text{ m/s}`

The time interval is,

`t=5\text{ s}`

The acceleration is given as,

`a=(v-u)/(t)`

substituting the values we get,

`\begin{gathered} a=(15-4)/(5) \\ =(11)/(5) \\ =2.2m/s^2 \end{gathered}`

Hence the acceleration is 2.2 m/s^2.