Question:
An object is allowed to fall from a height $R$ above the earth, where $R$ is the radius of earth Its velocity when it strikes the earth's surface, ignoring air resistance, will be
An object is allowed to fall from a height $R$ above the earth, where $R$ is the radius of earth Its velocity when it strikes the earth's surface, ignoring air resistance, will be
Updated On: Apr 1, 2026
- $\sqrt{g R}$
- $2 \sqrt{g R}$
- $\sqrt{2 g R}$
- $\sqrt{\frac{g R}{2}}$
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The Correct Option is A
Solution and Explanation
The correct answer is (A) : $\sqrt{g R}$
Loss in PE = Gain in KE
Loss in PE = Gain in KE
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Concepts Used:
Motion in a straight line
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