Gravity on a Falling Ball
on Different Planets

A boy trying to understand gravity holds a ball above the earth and lets it fall. With aspirations of being a rocket scientist, he wonders how fast the ball would fall on another planetary bodies.

What is known:

• The ball is released from rest 4 ft above the earth.
• The gravitational constant is 32.2 ft/s² towards the earth.

• With the acceleration given as a constant, the velocity and position equations can be found by integrating the relationships, a = dv/dt and v = dx/dt.