Create a Python program for simulating a bouncing ball with a bouncing height of 10 meters. The program should print out the time at which the ball reaches the ground.
The initial velocity of the ball is 20 m/s.
import math

# initial velocity
v0 = 20
# height
h = 10
# time to reach ground
t = (v0 * 2) / 9.81

print("The ball will reach the ground in {:.2f} seconds".format(t))