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## Homework Statement

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.70 m/s at an angle of 22.0° below the horizontal. It strikes the ground 5.00 s later.

Find the height from which the ball was thrown.

## The Attempt at a Solution

i found final Velocity first: -8.70 + (-9.80)(5) and i got -57.7

then i used this formula yf-yi = 1/2(Vy+Vi)t 1/2(-57.7 + -8.70)5

to get 166 for the height, but it is wrong.