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
Vf = 0 m/s
t = 10 s
a = ?
a = Vf - Vi /t
a = -2m/s^2
"a" is decelration
-
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)
x=(v^2)/2a==>x=400/4=100(m)