The speed of a swimmer is 4 km h⁻¹ in still water. If the swimmer makes strokes normal to the flow of a river of width 1 km, he reaches a point 750 m downstream on the opposite bank. The speed of river water i s ______ km h⁻¹.
Physics · Kinematics part-3 Relative motion · River problem
The speed of a swimmer is 4 km h⁻¹ in still water. If the swimmer makes strokes normal to the flow of a river of width 1 km, he reaches a point 750 m downstream on the opposite bank. The speed of river water is ______ km h⁻¹.