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A ball is thrown vertically downwards from a height of 20 m with an initially velocity v₀. It collides with the ground, loses 50 percent of its energy in collision and rebunds to the same height. The initial velocity v₀ is (Take g=10 ms⁻²)
Options
(a) 28 ms⁻¹
(b) 10 ms⁻¹
(c) 14 ms⁻¹
(d) 20 ms⁻¹
Correct Answer:
20 ms⁻¹
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Work Energy and Power
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If the earth shrink such that its mass does not change but radius decreases to one
- An electron moving in a circular orbit of radius r makes n rotations per second.
- The wavelength of first line of Balmer series is 6563Å. The wavelength of first line
- A wire of resistance 4 ohm is stretched to twice its original length.
- With what minimum acceleration can a fireman slide down a rope while breaking
Topics: Work Energy and Power (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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