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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: - The angular velocity of second’s hand of a watch is
- Which of the following phenomena support the wave theory of light?
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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
- The angular velocity of second’s hand of a watch is
- Which of the following phenomena support the wave theory of light?
- The electric field in a certain region is acting radially outward and is given by E=Ar.
- Van der waals,equation of state is(p+a/v²)(V-b)=nRT. The dimensions of a and b
- A solenoid of length l metre has self inductance L henry. If number of turns
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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