Which parts of the bike move in straight lines and which parts on curved lines when they ride it on a flat, straight road?

Those parts of the bike move along straight trajectories, the trajectory of which is a straight line, namely:

-steering wheel, bike frame, back seat.

Those parts of the bicycle move along a curved trajectory, the trajectory of which is a circle or an oval, namely:

– wheel rims, spokes, pedals.



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