"""
Exercise 2.9 from "A primer on...
"""

v0 = 5
g = 9.81
n = 10

t_stop = 2 * v0 / g

h = t_stop / n

time = []
y = []
for i in range(n + 1):
    t = i * h
    y.append(v0 * t - 0.5 * g * t**2)
    time.append(t)

#loop through the list and print the t, y pairs:
#first using range and indexing:
for i in range(len(time)):
    print(f"{time[i]:2.2f} {y[i]:2.2f}")

print("================")
#Exact same output, but using zip instead of indexing:
for ti, yi in zip(time, y):
    print(f"{ti:2.2f} {yi:2.2f}")


"""
Terminal> python ball_table2.py
0.00 0.00
0.10 0.46
0.20 0.82
0.31 1.07
0.41 1.22
0.51 1.27
0.61 1.22
0.71 1.07
0.82 0.82
0.92 0.46
1.02 0.00
================
0.00 0.00
0.10 0.46
0.20 0.82
0.31 1.07
0.41 1.22
0.51 1.27
0.61 1.22
0.71 1.07
0.82 0.82
0.92 0.46
1.02 0.00
"""