Please wait...
Contact Us
Need assistance? Contact us on below numbers

For Study plan details

10:00 AM to 7:00 PM IST all days.

For Franchisee Enquiry



Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this number


Mon to Sat - 10 AM to 7 PM

A man is crossing river flowing with velocity 5m/s. He reaches a point directly across at distance of 60m in 5s. His velocity in still water should be

Asked by valavanvino1011 30th August 2018, 4:12 AM
Answered by Expert
Let us assume, the swimmer crossing the river in shortest path with minimum drift,
Let v be the swimmer's speed in still water and u be the speed of river.
time t taken to cross the river in shortest path is given by, t  begin mathsize 12px style equals space fraction numerator d over denominator square root of v squared minus u squared end root end fraction space end style.......(1)
if we substitute t =5, d=60, u=5 in eqn.(1) and solve for v, we get v = 13 m/s
Answered by Expert 31st August 2018, 12:53 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Tags: velocity
Your answer has been posted successfully!

Chat with us on WhatsApp