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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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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A radiactive substance emits 100 beta particles in the first 2s and 50 beta
- B is doped in Si or Ge, then we will get
- An electric charge 10⁻³ μC is placed at the origin (0,0) of X-Y co-ordinate system.
- A photon of wavelength 300nm interacts with a stationary hydrogen atom in ground
- In the reaction ₉₂U²³⁴→₈₇Y²²², how many α-particle and β-particles are emitted
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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