A machine does 1000 J of work in 20 s. Power is MCQ with Answer and Explanation
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Question #1
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A car moving with speed 54 km/h is stopped in 5 s. The distance covered before stop is
Question #2
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Which of the following statements is perfectly true regarding uniform circular motion?
Correct Answer: Option C
Explanation:
In uniform circular motion, the magnitude of velocity (speed) remains constant. However, the direction of motion is continuously changing tangentially at every point on the circular path. Since velocity is a vector quantity (requiring both magnitude and direction), a change in direction means the velocity is changing continuously, resulting in an accelerated motion.
In uniform circular motion, the magnitude of velocity (speed) remains constant. However, the direction of motion is continuously changing tangentially at every point on the circular path. Since velocity is a vector quantity (requiring both magnitude and direction), a change in direction means the velocity is changing continuously, resulting in an accelerated motion.
Question #3
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A body weighs 100 N on Earth's surface. Weight at a height equal to Earth's radius is
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