A bus is moving with a velocity of 10m/* on a straight road. A scooterist wishes to overtake the bus in 100 seconds. If the bus is at a distance of 1 km from the scooterist, at what velocity should the scooterist chase the bus?
(a) 50 m/sec
(b) 40 m/sec
(c) 30 m/sec
(d) 20 m/sec
