Question

A monkey jumps from a branch that is 5 meters above the ground. Ignoring air resistance how long does it take to reach the ground?

Answer 1

We can find the time that the monkey takes to reach the ground from the kinematics equation:

$$y=\dfrac{1}{2}gt^2,$$ $$t=\sqrt{\dfrac{2y}{g}}=\sqrt{\dfrac{2\cdot 5\ m}{9.8\ \dfrac{m}{s^2}}}=1.01\ s.$$

Answer:

$t=1.01\ s.$