1.

Two cars A and B are at positions 50 m and100 m from the origin at t 0, They startsimultaneously with constant velocities 10 m/s and 5 m/s respectively in the same direction,Find the time at which they will overtake oneanother

Answer»

Let S be the distance from the point car A start to the distance where they both meet and t be the time taken to by both car to meetCar A:S=10tCar B:S-100 = 5t

dividing both equation we get2S-200=SS=200

ie... they both meet at distance of 200m from the start point of A ... which implies the distance from origin is 200+100 = 300mtime taken

=>S=10t=20 secondsthey take 20 seconds to meet



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