A race car starts from rest on a circular track of radius 400 m. Its speed increases at the constant rate of 0.500 m/s². At the point where the magnitudes of the radial and tangential accelerations are equal, determine (a) the speed of the race car, and (b) the elapsed time.

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The Answer of A race car starts from rest on a circular track of radius 400 m. Its speed increases at the constant rate of 0.500 m/s². At the point where the magnitudes of the radial and tangential accelerations are equal, determine (a) the speed of the race car, and (b) the elapsed time.

A Race Car Starts from Rest on a Circular Track