Question

A boy can swim in still water at 1m/s.He swims across river flowing at 0.6m/s which is 336m wide. If he travels in shortest possible time, then in which direction should he swim​

Answer 1

Answer:

336seconds

Explanation:

t=?, d=336, v=1seconds

336m change of 336seconds

t=shortest time ,d=distance ,v=velocity

t=d/v

= 336/1seconds

=336seconds

Answer 2

Given:

Speed of the river = 0.6m/s

Width of the river = 336m

To Find:

Shortest possible time and the direction

Solution:

d = 336m, v = 1 sec

where t is the shortest time ,d is the distance, and v is the velocity

For shortest time perpendicular strokes will be made, which will form an acute angle.

Thus,

t=d/v

= 336/ 1

= 336 seconds

Answer: Thus, the velocity will be in the direction making an acute angle with the flow of river.