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A bus is moving with a velocity of $10 ms^{-1}$ on a straight road. A scootorist wishes to overtake the bus in one minute. If the bus is at a distance of 1.2 km ahead, then the velocity with which he has to chase the bus is
Explanation
Speed to cover 1200 m by scootarist $v_{r} \times 60 = 1200 \Rightarrow v_{r} = 20$ speed to overtake bus $v = v_{r} + 10 = 30 m/s$