a car is moving with 74 km/h the driver seen a child at a distance 100m by what retardation he apply brakes to save the child
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u=74km/h
=20.55m/s
s=100m
v=0
a=?
v^2=u^2+2*a*s
0=20.55^2+2*a*100
0=422.30+200a
-200a=422.30
a=422.30/-200
a=-2.11m/s^2
=20.55m/s
s=100m
v=0
a=?
v^2=u^2+2*a*s
0=20.55^2+2*a*100
0=422.30+200a
-200a=422.30
a=422.30/-200
a=-2.11m/s^2
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