Question

A car moving with a speed of 20ms can be stopped be applying brakes after travelling a distance of 2m. the retardation of the car is.​

Answer 1

Answer:

100 m/s2

Explanation:

When the car is stopping the Final Velocity (v) = 0

Initial Velocity = 20 m/s

Distance travelled = 2m

3rd equation of motion =

$0^2 - 20^2 = 2 (a)(2)$

= 0 - 400 = 4a

-400 = 4a

a = -100 m/s2

Retardation = 100 m/s2