radial acceleration

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ra·di·al ac·cel·er·a·tion

the centripetal acceleration of a particle or vehicle moving along a curved path at a constant velocity; for example, turning a curve in an automobile, pulling out of a dive, or performing a loop maneuver in an aircraft. In aviation, acceleration varies directly with the square of the air speed and inversely with the radius of the turn (a = V2/r, where V is air speed and r is radius of turn).
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