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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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- A spring balance is attached to the ceiling of a lift.A man hangs his bag on the spring
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
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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
- The ratio of the acceleration for a solid sphere(mass m and radius R)rolling down
- A spring balance is attached to the ceiling of a lift.A man hangs his bag on the spring
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
- Out of the following which pair of quantities does not have same dimensions?
- The refracting angle of a prism is A and refractive index of the material of the prism
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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