1.

find out the retardation if the brakes of car going speed 50 metre per hour and attend rest after moving 250 metre of distance​

Answer»

Solution :-

As provided :-

Initial velocity = 50 m/s

FINAL Velocity = 0

Distance covered = 250

Now as Initial velocity , Final Velocity and the distance is provided.

So we can use the motion equation :-

v² = u² + 2aS

So by REPLACING values :-

0² = (50)² + 2A(250)

→ 0 = 2500 + 500a

→ -2500 = 500a

→a = (-2500) ÷ 500

→a = -5 m/s²

So our ACCELERATION = -5 m/s²

Or RETARDATION

\Huge{\boxed{\sf{ = 5 \: m/s^2}}}


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