Most versions of the Puma can attain about 160 mph.
its designed different that's like asking whats the difference between a f-15 and a f-16 two different aircraft
The weight of the helicopter affects the terminal speed by influencing the rate at which the helicopter falls. A heavier helicopter will reach a higher terminal velocity compared to a lighter helicopter, as the force of gravity will be greater on the heavier helicopter, causing it to accelerate faster. Additionally, a heavier helicopter may require more lift to counteract its weight, which can also impact its terminal speed.
I believe you are wrong. Donald Trump's helicopter looks more like a Sikorsky 76-A+ which do cost about $10M. The Super Puma looks more like a good old fashioned Vietnam era US military transport helicopter, the UH-1 "Huey" which was built by Bell Helicopter. Its a French super puma it cost him 2 million but the dick says its worth 10 million in the market. Loser :P
09527349074537mph
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.
No, a Cobra helicopter cannot break the sound barrier. The maximum speed of a Cobra helicopter is around 185-190 mph, which is significantly lower than the speed of sound (about 767 mph at sea level).
115 mph
That is about 160 mph.