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Sahay Sir > Question Answers > MTG NEET Physics > Part 1 > Chapter 4 - Motion in Plane > A swimmer crosses a river with minimum possible time 10 Second. And when he reaches the other end starts swimming in the direction towards the point from where he started swimming. Keeping the direction fixed the swimmer crosses the river in 15 sec. The speed of river flow and swimmer is constant. Find the ratio of speed of swimmer with respect to water and the speed of river flow.

A swimmer crosses a river with minimum possible time 10 Second. And when he reaches the other end starts swimming in the direction towards the point from where he started swimming. Keeping the direction fixed the swimmer crosses the river in 15 sec. The speed of river flow and swimmer is constant. Find the ratio of speed of swimmer with respect to water and the speed of river flow.

A body is projected vertically upwards with a velocity 10m/s . It reaches maximum vertical height h at time t. In time t/2 the height covered is