A boat covers 30 km downstream and returns the same distance upstream in a total time…
PHYSICS · Single correct · CBSE · Physics · Motion in a Plane · Motion in a Plane
Problem
A boat covers 30 km downstream and returns the same distance upstream in a total time of 7 hours. The speed of the current is 2 km/h. What is the speed of the boat in still water?
(a) 8km/h
(b) 12km/h
(c) 9km/h
(d) 6km/h