Question

A bicycle rider increases his speed from 5 m/s to 15 m/s in 10 seconds

Answer 1

To find the acceleration of the bicycle rider, we are going to use the acceleration formula:
`a= (v_(f)-v_(i))/(t)`
where

`a` is the acceleration

`v_(i)` is the initial speed

`v_(f)` is the final speed

`t` is the time

We know from our problem that increases his speed from 5 m/s to 15 m/s in 10 seconds, so his initial speed is 5 m/s and his final speed is 15 m/s; therefore,
`v_(i)=5`,
`v_(f)=15`, and
`t=10`. Lets replace those values in our formula:

`a= (v_(f)-v_(i))/(t)`

`a= (15-5)/(10)`

`a= (10)/(10)`

`a=1`

We can conclude that the acceleration of the bicycle rider 1 m/s^2