Question

A cheetah can accelerate at up to `6.0` `m``/s^2`. How long does it take for a cheetah to speed up from `10.5` `m``/s` to `12.2` `m``/s`?

Answer 1

we have,

`"acceleration" = 6 " m/s"^2`

`"initial velocity" = 10.5" m/s"`

`"final velocity" = 12.2" m/s"`

`color(white)(OOO`

`"acceleration" = ("final velocity " - " initial velocity")/ "time taken"`

`"time taken to speed up from 10.5m/s to 12.2m/s" = (12.2-10.5)/6 = 1.7/6 = 0.28 " seconds"`