I don't understand this question

[6ies]

a man jumps off a cliff that is 500m high how long will it take to get to the bottom. can someone just tell me the formula, i have a test tomorrow and i donm't want to fail.

 

[Astronuc]

Assume a man steps off the cliff of 500 m. How long will it take him to fall 500m.

Think of the acceleration due to gravity, which is constant, 9.81 m/s².

How long does it take an object to travel 500 m with an constant acceleration of 9.81 m/s²? This is a pretty basic problem.

 

[SimplySolitary_]

This is a pretty basic problem.

My guess would just be that he just didn't know the acceleration due to gravity.

But yes, I couldn't have explained it better then Astronuc. :) Need anymore help with studying for the test?
Good luck with it, by the way.