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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: - If the rise in height of capillary of two tubes is 6.6 cm and 2.2 cm
- In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected
- The ionisation energy of an electron in the ground state of helium atom is 24.6 eV.
- The angular momentum of an electron is J. The magnitude of the magnetic moment
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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
- If the rise in height of capillary of two tubes is 6.6 cm and 2.2 cm
- In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected
- The ionisation energy of an electron in the ground state of helium atom is 24.6 eV.
- The angular momentum of an electron is J. The magnitude of the magnetic moment
- The magnetic susceptibility of a material of a rod is 299. Permeability of vacuum
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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