Assuming That Be Petrol Burnt In A Motor Boat Varies As The Cube Of Its Velocity, The Most Economical Speed When Going Against A Current Of ckm/hr Is

Why Kaysons ?

Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

Live Doubt Clearing Session

Ask your doubts live everyday Join our live doubt clearing session conducted by our experts.

National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

SPEAK TO COUNSELLOR ? CLICK HERE

Download JEE Question paper & Solution Download JEE Important questions Download Complete syllabus of Maths, Physics, Chemistry

Question

Assuming that be petrol burnt in a motor boat varies as the cube of its velocity, the most economical speed when going against a current of ckm/hr is

easy

Solution

Correct option is

(3c/2 km/hr)

Economy for speed = average speed per litre of petrol burnt.

Let relative speed of the boat = v km/hr

and absolute speed of the boat = (v – c) km/hr

Download JEE Question paper & Solution Download JEE Important questions Download Complete syllabus of Maths, Physics, Chemistry

SIMILAR QUESTIONS

Q1

Total number of critical points of f (x) = maximum (sin x, cos x) ∀ x Ïµ (–2π, 2π) equal to

easy View solution

Q2

medium View solution

Q3

As an example consider the function f (x) = – (–x)^5/5, –1 ≤ x ≤ 0. Then at (0, 0) f (x) has

easy View solution

Q4

easy View solution

Q5

then f’(0) is equal to

easy View solution

Q6

Local minimum at x = 2, then

easy View solution

Q7

easy View solution

Q8

easy View solution

Q9

a minimum at x= 1 is the value of a is

easy View solution

Q10

easy View solution