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.

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

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

Assume that the cost of the petrol burnt (per hour) in driving a motor boat varies as the cube of its velocity. Show that the most economical speed of the boat when going against a current of 6km per hour is 9km. Per hour.

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

Express Velocity of 25000 miles per hour in kilometers per hour.

Express the following in S.I. units (a) 100 miles per hours, (b) 5 feet 2 inches

The cost of fuel of an engine varies as the square of its velocity and the cost of fuel is ₹ 48 per hour when the velocity is 16 km per hour. If other expenses be ₹ 300 per hour, then show that the most economical velocity for a journey of a given distance is 40 km per hour.