…suggest that the maximum possible tangential wind speeds generated by tornadoes are in the range of 125 to 160 metres per second, or 450 to 575 km per hour (about 410 to 525 feet per second, or 280 to 360 miles per hour). Most researchers believe the actual extreme value…

…distribution of proper motions and tangential velocities (the speeds at which stellar objects move at right angles to the line of sight) of stars near the Sun.

…velocity of the planet is tangent to the orbit. In the absence of gravity, the planet would obey the law of inertia (Newton’s first law) and fly off in a straight line in the direction of the velocity at constant speed. The force of gravity serves to overcome the inertial…

74 equals the tangential velocity, V_T, in kilometres per second in the plane of the celestial sphere.