Time = t = 6.62 s
Step-by-step explanation:
Given data:
Height = h = 215 m
Initial velocity = = 0 m/s
gravitational acceleration = g = 9.8 m/s²
Time = t = ?
According to the second equation of motion
As the initial velocity is zero, the first term of right-hand side of the above equation is equal to zero.
t² = 2h/g
t = square root 2h/g
t = square root 2x215/9.8
t = 6.62 s