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Question

A bus and a car start from rest and run along a straight line with constant acceleration of 2 m/s2 and 3 m/s2 respectively, with the car behind the bus at distance of 100 m. How long in seconds will it take before both the bus and car travel side by side? Answer upto 2 decimal places

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Solution


aC.B=aCaB=aC+(aB)=32=1 m/s2
|aC.B|=1m/s2() i.e ., relative acceleration = (constant)
xrel=urelt+12arelt2100=0+12×1×t2
t=200=102 sec

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