Question

Calculate the braking distance for a vehicle traveling at 30 mi/h (13.4 m/s) with an acceleration of - 9.0 (m/s)/s while breaking.

Answer 1

Braking distance of vehicle is 9.97 m

Step-by-step explanation:

It is given initial velocity of the vehicle u = 13.4 m/sec

Acceleration of the vehicle
`a=-9m/sec^2`

As the vehicle finally stops so final velocity of the vehicle v = 0 m/sec

We have to find the braking distance s

From third equation of motion

`v^2=u^2+2as`

`0^2=13.4^2+2* -9* s`

s = 9.97 m

So braking distance of the vehicle is 9.97 m