Question

The brake applied to a car produce an acceleration of 6 m/s2 in opposite direction to the motion.if car takes 2s t stop calculate the distance travelled

Answer 1

initial velocity (u) = x m/s

final velocity (v) = 0 m/s

time taken (t) = 2 s

acceleration (a) = -6 m/s^2

-a = v - u / t

-6 = 0 - x / t

u = a * t

u = 6 * 2

u = 12 m/s

distance travelled (s);

2 a s = v^2 - u^2

2 * -6 * s = 0^2 - 12^2

-12s = -144

s = -144/ -12

s = 12 m.

Answer 2

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