Question

The velocities of swimmer A and B in still water is 5 ms–1. Swimmer A decides to cross the river in minimum time and swimmer B decides to cross the river through shortest path. They start from the same point simultaneously and at t = t0, the distance of swimmer A from the bank is 25m and that of B is 20m. Find speed of stream of river (in ms–1). (Assume the velocity of stream is lesser than the velocity of swimmer in water)

Answer 1

Answer:

min time of A is 5s

Explanation:

1. we know, min time t