A train has a constant speed of 40 `ms^(-1)` on a level road against resistive force of magnitude `3xx10^(4) N`. Find the power of the engine.

A motor boat is moving at a steady speed of 20ms^(-1) . If the water resistance on the boat is 6000 N, the power of the engine is ------------kW.

A train travels from Agra to Delhi with a constant speed of 50 km h^(-1) and returns from Delhi to Agra with a constant speed of 40 km h^(-1) . Find the average speed of the train.

A vehicle of mass 1250 kg is driven with an acceleration 0.25 ms^(-2) along a straight level road against an external resistive force 500 N. Calculate the power delivered by the vehicle's engine if the velocity of the vehicle is 30 ms^(-1) .

A train weighing 100 metric ton is running on a level track with a uniform speed of 72km h^(-1) . If the frictional resistance amounts to 0.5kg per metric ton, find the power of the engine

An elevator that can carry a maximum load of 1500 kg (elvator+ passengers) is moving up with a constant speed of 2 ms^(-1). The frictional force opposing the motion is 3000 N. Find the minmum power delvered by the motor to the elevator in watts as well as in horse power (g=10ms^(-2))

An elevator that can carry a maximum load of 1500 kg (elvator+ passengers) is moving up with a constant speed of 2 ms^(-1). The frictional force opposing the motion is 3000 N. Find the minmum power delvered by the motor to the elevator in watts as well as in horse power (g=10ms^(-2))

A 50 metric ton train has to run at 72 kmh^(-1) . If the track is level and total resistance is (1)/(80) th the weight of the train, find the power of the engine.

A train of mass 2xx10^(5) kg has a constant speed of 20 ms^(-1) up a hill inclined at theta=sin^(-1)((1)/(50)) to the horizontal when the engine is working at 8xx10^(5) W. Find the resistance to motion of the trian. (Take ,g=9.8 ms^(-2) ).