At a distance L=400m from the traffic lights the brakes are applied to a locomotive moving at a velocity v=54km/hr.determine the position of a locomotive relative to the traffic lights 1 minute after the application of the brakes if its acceleration is -0.3m/s/s

Asked by  | 4th Mar, 2013, 05:08: PM

Expert Answer:

u=54km/h=15m/s
L=400m
t=60 sec
a=-0.3m/s2
s=15x60-1/2  x60x60x 0.3
  =360m
 
so the locomotive will be 40 m away from the traffic signal.

Answered by  | 4th Mar, 2013, 05:18: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.