Question

If you drop a tennis ball from the top of a ladder, at what rate will it accelerate

Answer 1

9.8 meters per square second (with g)

Answer 2

It doesn't matter if the object you drop is a tennis ball, a rock, a feather, or a school bus. All that matters is what planet you're on when you drop it. On the earth the acceleration of gravity is 9.8 meters per second squared straight down.