09527349074537mph
Not much at all. The Apache is an attack helicopter, not a cargo mover.
It is a military heavy cargo helicopter
Different models of helicopter have different performance stats. Impossible to answer without knowing which one you had in mind.
The Chinook is a large army cargo helicopter.
The same force as the weight of the helicopter and its crew and cargo.
A helicopter can be used for transportation, recreation/ tours, cargo transportation, rescue, & as a "crane" as in sky crane.
The Russian built Mi-26.
There are many different helicopter engines, most of them now jets
Cruising speed is about 150 mph.
About 170 mph.
The helicopter begins to fall because gravity is pulling its weight. As the helicopter accelerates, the air passing past the helicopter creates drag, as the helicopter continues to accelerate the drag Increases until the drag becomes equal to the weight, stopping it from accelerating. Even if the helicopter did not auto rotate it would still reach a terminal speed, however the terminal speed for the non auto rotating helicopter would be a lot higher and the helicopter would take longer to reach this speed.
They change the speed and angle of rotor, and speed of tail propeller.