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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: - In a water fall, the water falls from a height of 100 m. If the entire kinetic energy
- A particle free to move along X-axis has potential energy given as U(X) =k(1-e⁻ˣ²)
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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
- In a water fall, the water falls from a height of 100 m. If the entire kinetic energy
- A particle free to move along X-axis has potential energy given as U(X) =k(1-e⁻ˣ²)
- The mean radius of the earth is R, its angular speed on its own axis is ?
- Two bodies A and B having temperature 327° C and 427° C are radiating heat
- Two capacitors 3μF and 4μF, are individually charged across a 6 V battery.
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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