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A boy standing at the top of a tower of 20m height drops a stone. Assuming g = 10 ms⁻², the velocity with which it hits the ground is
Options
(a) 10 m/s
(b) 20 m/s
(c) 40 m/s
(d) 5 m/s
Correct Answer:
20 m/s
Explanation:
Here, u= 0 We have, v² = u² + 2gh
v = √(2gh) ⇒ √(2 x 10 x20)
= 20 m/s
Related Questions: - Which of the following pairs of quantities does not have same dimensional
- Electromagnetic induction is not used in
- Three identical spherical shells, each of mass m and radius r are placed
- The wave described by y = 0.25 sin (10 2πx – 2πt), where x and y are in meters
- The potential difference that must be applied to stop the fastest photoelectrons
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following pairs of quantities does not have same dimensional
- Electromagnetic induction is not used in
- Three identical spherical shells, each of mass m and radius r are placed
- The wave described by y = 0.25 sin (10 2πx – 2πt), where x and y are in meters
- The potential difference that must be applied to stop the fastest photoelectrons
Topics: Motion in Straight Line (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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