Given, velocity of bus =10ms−1 Distance between bus and scootorist =1.2km =1200m Let the velocity of scootorist be vs Time =1min=60s Relative velocity of scootorist w.r.t. bus =(vs−10)ms−1 We know that, time =
distance
relative velocity
⇒60=
1200
vs−10
⇒60(vs−10)=1200 ⇒60vs−600=1200 ⇒60vs=1200+600 ⇒60vs=1800 Velocity of a scootorist, ∴vs=