Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

A river 4.0 miles wide is following at the rate of 2 miles per hour. The minimum time taken by a boat to cross the river with the speed velocity of 4 miles per hour in still water is approximately.

A river 4.0 miles wide is following at the rate of 2 miles per hour. The minimum time taken by a boat to cross the river with the speed velocity of 4 miles per hour in still water is approximately.

Grade:9

1 Answers

Arun
25763 Points
3 years ago
For minimum time the velocity in direction of motion shoud be maximum. And since speed of river is perpendicular hence have no influence on time taken to cross it. Now for maximum speed boat should move perpendicular to flow of river hence tme = distance ÷ speed = 4÷4=1hr

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free