a bus was moving with a speed of 54km/h on applying brake it stop in 8sec calculate acceleration and distance in this time
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Hey.
Here is the answer.
as u = 54km/h = 54×5/18 m/s = 15m /s
v = 0 m/s
t=8 s
and V= u +at
so, a= v-u / t = 0-15 / 8= -15/8 m /s^2
(retardation)
s= ut+1/2at^2
so, s= 15×8+ 1/2 (-15/8)×8×8
so, s= 120-60=60 m
Thanks.
Here is the answer.
as u = 54km/h = 54×5/18 m/s = 15m /s
v = 0 m/s
t=8 s
and V= u +at
so, a= v-u / t = 0-15 / 8= -15/8 m /s^2
(retardation)
s= ut+1/2at^2
so, s= 15×8+ 1/2 (-15/8)×8×8
so, s= 120-60=60 m
Thanks.
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