# You throw a football straight up into the air with a speed of 12.2 m/s. How high does the ball go?

Nov 28, 2015

$7.6 \text{m}$

#### Explanation:

Use ${v}^{2} = {u}^{+} 2 a s$

This becomes:

$0 = {u}^{2} - 2 g h$

$\therefore 0 = {12.2}^{2} - 2 \times 9.8 \times h$

$\therefore h = \frac{148.84}{2 \times 9.8} = 7.6 \text{m}$