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Terminal velocity is the maximum speed attainable by an object as it falls through ... density 2650 kg/m 3) in water at 20 °C, computed with the formula of Soulsby ...
Hull speed can be calculated by the following formula: where is the length of the waterline in feet, and is the hull speed of the vessel in knots. If the length of waterline is given in metres and desired hull speed in knots, the coefficient is 2.43 kn·m −½.
A rocket's required mass ratio as a function of effective exhaust velocity ratio. The classical rocket equation, or ideal rocket equation is a mathematical equation that describes the motion of vehicles that follow the basic principle of a rocket: a device that can apply acceleration to itself using thrust by expelling part of its mass with high velocity and can thereby move due to the ...
In gravitationally bound systems, the orbital speed of an astronomical body or object (e.g. planet, moon, artificial satellite, spacecraft, or star) is the speed at which it orbits around either the barycenter (the combined center of mass) or, if one body is much more massive than the other bodies of the system combined, its speed relative to the center of mass of the most massive body.
The subsonic speed range is that range of speeds within which, all of the airflow over an aircraft is less than Mach 1. The critical Mach number (Mcrit) is lowest free stream Mach number at which airflow over any part of the aircraft first reaches Mach 1. So the subsonic speed range includes all speeds that are less than Mcrit. Transonic: 0.8–1.2
The formula used to calculate a safe speed for a lower weight is , where V A is maneuvering speed (at maximum weight), W 2 is actual weight, W 1 is maximum weight. [ 5 ] Maximum operating maneuvering speed V O
This first Formula E car had a power of at least 190 kilowatts (250 hp). The car was able to accelerate from 0 to 100 km/h (0 to 62 mph) in 3 seconds, with a maximum speed of 225 km/h (140 mph). [37] The generators used to re-charge the batteries are powered by glycerine, a by-product of bio-diesel production. [38]
The velocity on the flat terrain is 5 km / h, the maximum speed of 6 km / h is achieved roughly at -2.86°. [5] On flat terrain this formula works out to 5 km/h. For off-path travel, this value should be multiplied by 3/5, for horseback by 5/4. [1]