# Question #af942

##### 1 Answer

Mar 13, 2017

#### Explanation:

Using FPS system of units.

The kinematic expression is

Inserting given values and noting that acceleration due to gravity

Which is the given equation.

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.

*We can start solution from here*.

When the ball reaches ground

Inserting in the given height equation we get

Solving the quadratic with the inbuilt graphic tool we get two roots as below. Ignoring the