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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
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Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A ball rolls off the top of stair way with a horizontal velocity of magnitude 1.8 m/s
- The magnetic field due to a current carrying circular loop of radius 3 cm at a point
- Imagine a light planet revolving around a very massive star in a circular
- The escape velocity from the earth’s surface is 11 kms⁻¹.A certain planet
- A parallel plate air capacitor has capacity C, distance of seperation between plate
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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