Question

A ball is thrown upwards with a speed $u$ from a height $h$ above the ground.The time taken by the ball to hit the ground is

• A. $\sqrt {\frac {2h}{g}}$
• B. $\sqrt {\frac {8h}{g}}$
• C. $\frac {\sqrt {u^2+2gh}}{g}$
• D. $\frac ug+\sqrt {\frac {2h}{g}}$

Answer 1

Answer: (C)

$\frac {\sqrt {u^2+2gh}}{g}$

Answer 2

The correct option is (C): $\frac {\sqrt {u^2+2gh}}{g}$.