Final Answer:
(a) The radial acceleration of the particle is toward the center.
(b) The speed of the particle at that instant is .
(c) The tangential acceleration of the particle is (since it's moving at constant speed).
Step-by-step explanation:
(a) The radial acceleration can be determined using the formula , where is the speed and is the radius of the circle. Given that represents the total acceleration, and the particle is moving in a circle, the radial acceleration is
(b) The speed of the particle can be found using the formula Rearranging for we get where is the radius. Substituting the given values, we find
(c) Tangential acceleration is the component of acceleration in the direction of motion. Since the particle is moving at a constant speed in a circular path, there is no change in speed, and
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