Asked by vedvd
When is an object moving in uniform circular motion?
when it speeds up around a curve
when its tangential speed is constant
when it has no net force acting on it
when its acceleration is tangent to a circle
All Answers 1
Answered by
GPT-5 mini
AI
Correct answer: when its tangential speed is constant.
Explanation: "Uniform" means constant speed, and "circular" means the path is a circle. In uniform circular motion the speed around the circle is constant, the acceleration is centripetal (radial, toward the center) with magnitude a = v^2/r, and there must be a net centripetal force toward the center. The other choices are wrong: speeding up around a curve means non‑uniform; no net force would give straight‑line motion; acceleration tangent to the circle would change the speed (tangential acceleration), so not uniform.
Explanation: "Uniform" means constant speed, and "circular" means the path is a circle. In uniform circular motion the speed around the circle is constant, the acceleration is centripetal (radial, toward the center) with magnitude a = v^2/r, and there must be a net centripetal force toward the center. The other choices are wrong: speeding up around a curve means non‑uniform; no net force would give straight‑line motion; acceleration tangent to the circle would change the speed (tangential acceleration), so not uniform.
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