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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
- 540 g of ice at 0° C is mixed with 540 g of water at 80° C. The final temperature
- A spherical liquid drop of radius R is divided into 8 equal droplets. If the surface
- A uniform electric field and uniform magnetic field are acting along the same
- When the speed of electron beam used in Young’s double slit experiment is increased,
- A proton and an alpha particle both enter a region of uniform magnetic field B,
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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