Chapter 4, Problem 60A

Calculate your personal 'hang time,' the time your feet are off the ground during a vertical jump.

To determine

The personal “hang time”.

Answer to Problem 60A

The hang time is less than 1 second that is 0.32 s.

Explanation of Solution

Given:

The acceleration due to gravity is given as: $g=10{\text{ m/s}}^2$ .

Formula used:

For time:

  $t=\sqrt{\frac{2d}{g}}$

Where, $d$ is the vertical height of the jump.

Calculation:

Hang time is an amount of time that a jumper is off the ground. Greatest ever basketball players have the hang time of less than 1 second. Let us calculate our hang time, by measuring our own vertical jump. For an average jump, $d=0.50\text{ m}$ . So according to the statement, the hang time can be calculated as follows:

  $\begin{array}{l}t=\sqrt{\frac{2\left(0.50\text{ m}\right)}{10{\text{ m/s}}^2}}\\ t=0.32\text{ s}\end{array}$

Conclusion:

Thus, the hang time is less than 1 second that is 0.32 s.