# Molly kicks a soccer ball into the air with an initial velocity of 15 m/s. It lands 20 meters from where she kicked it. At what angle did Molly launch the ball?

##### 1 Answer

Feb 7, 2016

#### Explanation:

The x and y components of initial velocity

1.

2.

3. from 1) the distance in x is

a) Total distance in x, Range

b) Where

4. The displacement in y is

a) at time

b) setting y=0 and solving for time,

5. Insert 4.a) into 3.a) we get,

a) 5. above can also be written as:

Now we know,