You arrive on an unknown planet with your team of astro-scientists. This time, to calculate acceleration due to gravity you decide to drive your buggy off of a 16 meter tall cliff. If you drive at a velocity of 22 m/s off the cliff and land 55.1 meters away, what is your air time and acceleration due to gravity?

I do not even know where to start to find the acceleration due to gravity. If someone shows me how to find that i can do the rest.