# A projectile is shot from the ground at a velocity of #54 m/s# and at an angle of #(7pi)/12#. How long will it take for the projectile to land?

##### 1 Answer

Oct 14, 2016

#### Answer:

#### Explanation:

Write the equation for the y coordinate as a function of time:

To find the times when the projectile is on the ground we set

We know that the projectile is launched from the ground so

Solve the remaining factor for t: