- #1

- 37

- 0

## Homework Statement

A baseball is thrown just so that it is able to pass a wall 10m high at a distance that is 1000m away. If it is aimed 30 degrees above the horizontal, what is the initial speed of the baseball?

## Homework Equations

relevant equations shown at the attempt at the solution

## The Attempt at a Solution

[itex]Vy^2 = Voy^2 + 2ay[/itex]

[itex]Voy = √(Vy^2-2ay)[/itex]

[itex]Voy = √(0^2)-2(-9.8)(10)[/itex]

[itex]Voy = 14m/s[/itex]

[itex]Sin = Opposite/Hypotenuse[/itex]

[itex]Hypotenuse = Opposite/Sin[/itex]

[itex] V = Voy/Sinθ[/itex]

[itex] V = 14/Sin30°[/itex]

[itex] V = 28m/s [/itex]

answer is actually 107