• anonymous
A particle moves around a circle x^2+y^2=25 at constant speed, making one revolution in 2 seconds. Find its acceleration when it is at (3,4) I have absolutly no idea how to transform x^2+y^2=25 into a vectorequation on the from $r= x(t) i + y(t)j+z(t)k$, it would be very much appreciated with some help.
Mathematics

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