Free Rotational and Circular Motion MCQs with Answers
21 Rotational and Circular Motion MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
21 questions · page 3 of 3
21. An angular displacement of 90 degrees is equal to:
- A. One-fourth revolution
- B. One-third revolution
- C. One half revolution
- D. One complete revolution
Explanation: A full revolution is 360 degrees, so 90 degrees is a quarter of it, equivalent to pi over 2 radians. Half a revolution would be 180 degrees or pi radians. Converting between degrees, radians and revolutions is worth doing fluently, since rotational formulae require radians.
Correct answer: One-fourth revolution