Question

You drop a ball from the roof of a building. You can use the expression √2gh to find the velocity(in feet per second) of the ball when it strikes the ground, where g=32 feet/sec^(2) and h is the height (in feet) from which the ball was dropped. Find the velocity of the ball when it strikes the ground if the building is 121 feet tall.

Answer 1

Just plug height in for h and gravity constant in for gravity
g should be a constant defined in your book

Answer 2

its not in my book

Answer 3

what type of class is it?

Answer 4

pre-algebra

Answer 5

you put g in your question.
You said g = 32
So plug 32 in for g and 121 for h
does that help?