An Engine length 1000 m moving at 10 m/s. A bird is flying from engine to end with x Kmph and coming back at 2x. Take total time of bird traveling as 187.5 s. Find x and 2x.
Asked by Pritha sharma
HARSH AARYAN   distancetravelled by the bird=2000m
time taken=187 1/2 sec
=375/2 sec
speed is in the ratio of 1:2
dividing the time in the ratio of 1:2
time to=375/2(2/3)=125 sec
speed=distane/time=1000/125=8 m/sec
speed in thefro direction=16m/sec
check
1000/8+1000/16=3000/16
=187.5 sec checks
:)
6 years ago
yogesh   i think its wrong Harsh......the engine is also in motion....u hv to use relativity methods....
6 years ago

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