Mistake Master · AP Physics C · Unit 2 · Topic 2.10 · Step-Through Animation
Centripetal Is a Job, Not a Force
A 0.5 kg ball whirls on a string at a steady 4 m/s and the speed never changes — yet it accelerates every instant, straight at the center. Watch the velocity turn, meet the real force holding the circle, then snap the string and see where the ball actually goes.
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