Question
Raju is travelling in a train moving at a speed of 72 km/h.
In order to stop the
train, the driver decreases the speed. The rate of decrease in speed of the
moving body is known as deceleration or retardation.
If the deceleration of the train is 10m/s
2
, how much time will it take to come
to a stop
Read 1 Solution.
V = u + at.
In this case , v=0, u= 72km = 72000m
a = - 10m/s²
0= 72000 - 10t
t = 7200 sec
t = 7200/60 min
t = 120/60 hour
t = 2 hours......
AMAN JAISWAL 8 year ago
is this solution helpfull: 35 30