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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: - Ring, hollow ring and solid sphere are rolled down from inclined plane
- The time period of a simple pendulum in a lift descending with constant acceleration g is
- A parallel plate capacitor has 91 plates, all are identical and arranged with same
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- Which of the following substances has the highest elasticity?
Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Ring, hollow ring and solid sphere are rolled down from inclined plane
- The time period of a simple pendulum in a lift descending with constant acceleration g is
- A parallel plate capacitor has 91 plates, all are identical and arranged with same
- A geostationary satellite is orbiting the earth at a height of 5R above that surface
- Which of the following substances has the highest elasticity?
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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