Asked by Anonymous
A train slow down from 108 kilometer per hour with a uniform retardation of 5 meter per seconds how long will it take to reach 18 kilometer per hour
Answers
Answered by
Anonymous
a = -5 m/s^2 ??
108 km /hr * (1 hr / 3600 s) * (1000 m / 1 km) = 30 m/s
18 km/hr /3.6 = 5 ms
so
v = Vi + a t
5 = 30 - 5 t
5 t = 25
t = 5 seconds
108 km /hr * (1 hr / 3600 s) * (1000 m / 1 km) = 30 m/s
18 km/hr /3.6 = 5 ms
so
v = Vi + a t
5 = 30 - 5 t
5 t = 25
t = 5 seconds
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