Velocity is a vector; a change in either speed or direction constitutes a change in velocity. Centripetal force is required to maintain circular motion and causes a continuous change in the direction of velocity.
Given below are two statements: one is labeled as Assertion A and the other is labeled as Reason R. Assertion A: When an artificial satellite moves around the earth in a circular orbit with a constant speed, its velocity is not constant because the direction of motion of the satellite is changing continuously. Reason R: The force of gravity of earth keeps the satellite in circular orbit around it. In the light of the above statements, choose the correct answer from the options given below:
Asked in HAS Prelims 2022 · Topic: Mechanics (Gravitation and Central Force Motion (Kepler's Laws))
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Answer: A. Both A and R are true and R is the correct explanation of A
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