- #1

- 10

- 0

## Homework Statement

A student drops a ball from the top of a tall building; it takes 2.5 s for the ball to reach the ground.

A.What was the ball’s speed just before hitting the ground?

B.What is the height of the building?

## Homework Equations

v=V(not) + at

x=V(not)t + 1/2at(Squared)

V(Squared) =V(not) + 2ax

## The Attempt at a Solution

I wrote the following

V(not) = ?

a= 9.80 (Because it is a free fall question?)

t= 2.5

v= ?

x= ?

I think I am missing a variable but I do not know which one.

thanks

EDIT: Will I have to do A2+B2=C2?

If so what will be the legs and what will be the hyp?