A bus is moving with a speed of `10 m s^(-1)` on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooteritst with what speed should the scooterist chase the bus?

Options

A. 1) `20ms^(-1)`
B. 2) `40ms^(-1)`
C. 3) `25ms^(-1)`
D. 4) `10ms^(-1)`

Answer

A

Explanation

The relative velocity of scooter w.r.t bus
`barv_(s)-10= barv_(s)-barv_(B)= barv_(s)-10`…….(i)
Relative velocity = ("Relativedisplacement")/("time")`
`v_(s)-10=(1000)/(100) = 10Rightarrowv_(s)= 20m//s`