A Projectile Is Fired from Ground Level at an Angle

Multiple Choice

A projectile is fired from ground level at an angle above the horizontal on an airless planet where g = 10.0 m/s².The initial x and y components of its velocity are 86.6 m/s and 50.0 m/s respectively.How long after firing does it take before the projectile hits the level ground?

A) 5.00 seconds
B) 10.0 seconds
C) 15.0 seconds
D) 20.0 seconds