Question

A particle is released from height S from the surface of the Earth. At a certain height, its kinetic energy is three times its potential energy. The height from the surface of the earth and the speed of the particle at that instant are respectively

• A. $\frac{S}{4},\sqrt{\frac{3gS}{2}}$
• B. $\frac{S}{4},{\frac{3gS}{2}}$
• C. $\frac{S}{4},{\frac{\sqrt{3gS}}{2}}$
• D. $\frac{S}{2},{\frac{\sqrt{3gS}}{2}}$

Answer 1

Answer: (A)

$\frac{S}{4},\sqrt{\frac{3gS}{2}}$

Answer 2

The correct answer is option (A): $\frac{S}{4},\sqrt{\frac{3gS}{2}}$