Answer:
The acceleration of a rock thrown straight upward on the way up, at the top of its flight and on the way down is called gravity, and it's denoted by the letter g.
Gravity change vary depending on the position on Earth or the planet that you are studying
Usually on earth we use
[tex]g=9.8\frac{m}{s^{2} } =32.2\frac{ft}{s^{2} }[/tex]
Explanation:
If we analyze Newton's second law
[tex]F=m*a[/tex]
Then we have the force that is caused by the weight of the rock
[tex]m*a=m*g[/tex]
So, we have that
[tex]a=g[/tex]
