- #1
wobba63
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Homework Statement
Acceleration is a vector representing the rate of change of velocity. An object moving in a circle at constant speed:
A. accelerates without changing its velocity
B. Has constant acceleration
C. Changes speed but not velocity
D. Changes velocity but not speed
Homework Equations
Arad=V2/R
The Attempt at a Solution
The answer given in my book is D, which makes sense, but I also don't see how B is wrong. If the object's speed is constant, and radial acceleration is based off the magnitude of velocity (hence changing direction of velocity doesn't affect it), then shouldn't the acceleration also be constant?