Question

a train is moving with a velocity of 90 km which produce retardation of 5 m per second find the time for coming to rest​

Answer 1

Answer:

t = 25 m/s / 5 m/s² = 5 s. So, it will take 5 seconds for the train, initially moving at a velocity of 90 km/hr, to come to rest.

Answer 2

Answer:

u=0 m/s

a=-5m/s2

V=90 km/hr x 5/18

=25 m/s

v=u+at

25=0+(-(-5))t

25/5=t

t=5secs