 
Arturo O. answered  11/18/19
Tutor
                    
        5.0
        (66)
            Experienced Physics Teacher for Physics Tutoring
Neglecting air resistance,
h = gt2/2 ⇒
t = √(2h/g)
h = height = 5m
g = acceleration of gravity = 9.8 m/s2
Plug in the numbers and get t in seconds.
 
    