A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 17.3 m/s directly upward. Choose upward as the positive direction in your analysis. (a) What is the maximum height above the ground that the ball reaches?

h=15.27m

Explanation:

Since at maximum height the vertical velocity must be null it's better to use the formula:

We will use this formula for the vertical direction, choosing the upward direction as the positive one, so we have:

or

which for our values is:

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge