Question

a car is travelling at 72kmph, brakes are applied so as to produce a uniform acceleration of -0.5m/s square. then how much distance will the car take to come to rest
Plz answer fast

Answer 1

Answer:

The answer is in the picture

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Answer 2

Answer:

Explanation:

(Initialvelocity=72km/hr=72*5/18=20m/s)

By using IIIrd eq.of motion

Finalvelocity^2=2*acceleration*dis.+initial velocity^2

=0^2=2*(-0.5)s+(20^2)

0=-1s+400

1s=400

So, 400m.s ans....

Thanks