The force required to row a boat over the sea is proportional to the speed of the boat. It is found that it takes 24 h.p. to row a certain boat at a speed of 8km/hr, the horse power required when speed is doubled -

The force required to tow boat at a constant velocity is proportional to the velocity. If it takes 7460 W to two a certain boat at a speed of 4 kmph, how much horse power (1 H.P = 746 watts) will be required to tow it at a speed of 12 kmph ? [Hint : Force prop velocity P = force xx velocity]

The force required to row a boat at constant velocity is proportional to the speed. If a speed of 4 kmh^(-1) requires 7.5 kW, how much power does a speed of 12 kmh^(-1) require?

The force required to row a boat at constant velocity is proportional to the speed. If a speed of 4 kmh^(-1) requires 7.5 kW, how much power does a speed of 12 kmh^(-1) require?

The force required to row a boat at constant velocity is proportional to square of its speed. If a speed of v km/h requires 4 kW, how much power does a speed of 2v km/h require?

When the speed of a boat in still water is 4 km/h and the rate of stream is 2 km/h, find upstream speed of the boat

If the speed of a boat in still water is 8 km/h and the rate of stream is 4 km/h, then find upstream speed of the boat.