Hello, Forgive me if this question is stupid. How an object undergoes circular motion when the trajectory is not circular. I mean if it is not moving in a circle then why is it called circular motion. http://emuonline.emu.edu.tr/phys101/PhIch6pg3_files/image009.gif [Broken] Let's suppose I am running along a circular path and I have a leaking cup of paint with me. Of course as long as speed is not changing, the paint will trace out a nice circular path. But if I start increasing my speed, won't I go slightly of the circular track because I would have traveled just a tiny bit than was necessary ??