Question

Brakes are applied to a car produce a uniform retardation of 0.9m/s^2,if initial velocity of car is 27m/s^2,what distance will it cover before coming to rest?​

Answer 1

Answer:

dist travelled before coming to rest = 405 m

Explanation:

u = 27 m/s

a = -0.9 m/sq-sec

v = 0

so, using 3rd eqn of motion -

v^2 = u^2 + 2as

s = (v^2 - u^2)/2a

= (0 - 27×27)/(2×(-0.9))

= 405 m

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hope, it helps you.