Answer:
Explanation:
In order to solve the problem we will use the following newton's equation of motion.
[tex]S = ut+\frac{1}{2} gt^{2}[/tex]
S = ?
u (initial velocity) = 0
g = 9.8 [tex]m/s^{2}[/tex]
For t = 1 s
[tex]s = 0+\frac{1}{2} (9.8)(1^{2})[/tex]
s = 4.9 m = 5m.
For t = 2 s
[tex]S = 0+\frac{1}{2}(9.8)(2^{2})[/tex]
s = 19.6 m = 20m
