Rohit walks at 17 km/hr and Ruchira cycles at 22 km/hr towards each other. What was the distance between them when they started if they meet after 44 minutes?
A) 42.9 km B) 35.8 km C) 21.5 km D) 28.6 km
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Step-by-step explanation:
Apply relative velocity concept in it..rohit velocity is +17km/hr and ruchira velocity is -22km/hr (in vector form and they are coming towards each other) now we know relative velocity is V1-V2 and V1 =17 V2 =-22 by formula we get Vrel will be 39km/hr
Now we know speed=distance/time
Time= 44/60 (in hour)
Distance=39×time
= 39×44/60
=28.6 km
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