CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Average Speed

What is the r...

Question

What is the relative velocity of a man swimming downstream with speed 12 km/h (in still water) with respect to a child running towards the river with speed 4 km/h in direction perpendicular to water flow. Speed of water flow = 4 km/h.

Open in App

Solution

The relative speed of the man with respect to river = 12 + 4 = 16 km/hr.
But since the speed of the child is perpendicular to water flow, the relative velocity of the man with respect to child is 0.

Suggest Corrections

thumbs-up

1

Similar questions

Q. A man swims with a speed of

4 k m / h

in still water. The speed of the river is

3 k m / h

. He starts swimming in the river perpendicular to the direction of the flow of the current of the river. The river is

2 k m

wide. What is the horizontal shift of the man?

Q. A man swims with a speed of

4 k m / h

in still water. The speed of the river is

3 k m / h

. He starts swimming in the river perpendicular to the direction of the flow of the current of the river. The river is

2 k m

wide. What is the horizontal shift of the man?

Q. A man can swim at a speed of

3

km/h in still water. A river is flowing with a speed of

2

km/h . If man always keeps his direction of swimming

120^{0}

from the direction of flow of water the time taken to cross the river of breadth =

500

Q. The stream of a river is flowing at a speed of

2 k m / h

. A swimmer can swim at a speed of

4 k m / h

in still water. What should be the direction of the swimmer with respect to the flow of the river to cross the river with minimum drift?

Q. A man swims across a river with speed of

5 k m h^{- 1}

(in still water), while a boat goes upstream with speed

12 k m h^{- 1}

(in still water). How fast and in which direction does the man appear to go to the boatman? Given that the speed of flowing water is

2 k m h^{- 1}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Average Speed_tackle

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard VII Physics

Join BYJU'S Learning Program

CrossIcon