Question

A car moving along a straight highway with speed of 126kmh is brought to stop within a distance of 200m l. Find the time for to stop it.

Answer 1

check the attachment

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Answer 2

Answer:

Explanation:

u= 126kmph =35m/sec

v=0

s=200m

$v^2-u^2=2as\\\\a=-\frac{u^2}{2s}\\\\a=3.0625ms^{-2}\\\\also\\\\v=u+at\\\\t=-\frac{u}{a}\\\\t=11.42 \;\;seconds$

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