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Average speed is an average value of speed over a given time. If your speed is constant (not changing), then your average speed will equal your speed at any given moment in time.
360 km/h
average speed = distance / time
Instantaneous speed is the speed at a particular moment in time.The average speed of an object tells you the (average) rate at which it covers distance
80
About 170 mph.
That is about 160 mph.
The average speed that a humming bird flies is 25-30 miles per hour.
The world's fastest is the Eurocopter X3 , which flies at 300 mph. -( The Apache flies at 227, and Bell's Viper at 255. )
For a fairly new helicopter, around 120 knots. Around 150 mph, except for fast military helicopters.
That cannot be calculated without knowing the average speed over that distance.
09527349074537mph
There are many different helicopter engines, most of them now jets
Cruising speed is about 150 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.
Some are, yes, but not all of them. Military attack helicopters tend to be the fastest. The average speed of a formula 1 car is 230 MPH. The average speed of an Apache attack helicopter is 365 MPH.