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Physics, 05.02.2021 18:30 ms0579930

A particle is moving at a constant speed in a counterclockwise circle of radius r about the
point x = y = 0. At a certain instant it is at
x = −r, y = 0.
What is the direction of its acceleration at
that instant?
A. It is along ˆı.
B. It is along −ˆj.
C. It is along ˆj.
D. It is along −ˆı.

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