A car moves with a velocity of 72km/h. It is brought to rest in 10s. Find retardation
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A car moves with a velocity of 72km/h. It is brought to rest in 10s. Find retardation

[From: ] [author: ] [Date: 12-05-28] [Hit: ]
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Vi = 72 km/h = 20 m/s
Vf = 0 m/s
t = 10 s
a = ?
a = Vf - Vi /t
a = -2m/s^2
"a" is decelration

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retardation=2 m/s2

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t=V/a ==>10(s)=(72/3.6)/a==>a=2(m/s^2)

x=(v^2)/2a==>x=400/4=100(m)
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