kleighlamb3958 kleighlamb3958
  • 28-04-2020
  • Physics
contestada

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.

Respuesta :

aristeus aristeus
  • 29-04-2020

Answer:

Braking distance of vehicle is 9.97 m

Explanation:

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

Acceleration of the vehicle [tex]a=-9m/sec^2[/tex]

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

[tex]v^2=u^2+2as[/tex]

[tex]0^2=13.4^2+2\times -9\times s[/tex]

s = 9.97 m

So braking distance of the vehicle is 9.97 m

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