Acceleration {radial acceleration}| can be along perpendicular to curve. For circular motion, object pulls back toward center to make circle, and radial acceleration ar equals tangential velocity vt squared divided by radius r: ar = vt^2 / r. If radial acceleration is more, orbit is ellipse. If radial acceleration is less, orbit is spiral.
Physical Sciences>Physics>Kinetics>Motion Types>Rotation
5-Physics-Kinetics-Motion Types-Rotation
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Date Modified: 2022.0224