A driver takes 0.20 seconds to apply the brakes . if he is driving car atva speed of 54 kmh-1 and the brakes cause a deceleration of 6.0 ms-2 .find the distance traellved bt the car after he sees the need to put the brakes.
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Answered by
14
t=0.2
a= -6
u= 54 *1000 / 3600 m/s =15
so, s=ut+1/2 at^2
s= 15 *0.2 + 1/2( -6) (0.2)^2
= 3 + (-3) * 0.04
= 3+ (-0. 12)
= 2. 88
a= -6
u= 54 *1000 / 3600 m/s =15
so, s=ut+1/2 at^2
s= 15 *0.2 + 1/2( -6) (0.2)^2
= 3 + (-3) * 0.04
= 3+ (-0. 12)
= 2. 88
Answered by
5
thanks for your question it is helpful for you
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