Home
Class 12
MATHS
Assuming the petrol burnt (per hour) in ...

Assuming the petrol burnt (per hour) in driving a motor boat veries as the cube of its velocity, show that the most economical speed when going against the current of `c` miles per hour is `((3c)/2)` miles per hour.

Text Solution

Verified by Experts

The correct Answer is:
c
Promotional Banner

Topper's Solved these Questions

  • MAXIMA AND MINIMA

    ML KHANNA|Exercise PROBLEM SET (1) (TRUE AND FALSE )|3 Videos

  • MAXIMA AND MINIMA

    ML KHANNA|Exercise PROBLEM SET (2) (MULTIPLE CHOICE QUESTIONS)|17 Videos

  • MATRICES

    ML KHANNA|Exercise COMPREHENSION|3 Videos

  • MEASURES OF CENTRAL TENDENCY

    ML KHANNA|Exercise ASSERTION / REASON|1 Videos

Similar Questions

Explore conceptually related problems

If the petrol burnt per hour in driving a motor boat varies as the cube of it's velocity when going against a current of C .KMPH the most economical speed is

A train travels at an average speed of 50 miles per hour. It travels for 2 1/2 hours.

A boat which has a speed of 5 km per hour in still water crosses a river of width 1 km along the shortest possible path in fifteen minutes. The velocity of the river water in km per hour is :-

A family planning a weekend trip decides to spend no more than a total of 8 hours driving. By leaving early in the morning, they can average 40 miles per hour on the way to their destination. Due to the heavy Sunday traffic they average only 30 miles per hour on the return trip. What is the farthest distance from home the can plan to go? 120 miles or less Between 120 and 140 miles 140 miles Between 140 and160 miles