- #1

OnePunch

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## Homework Statement

A hammer bro is throwing hammers with a velocity of 1.7 E 1 m/s at 51 degrees down at Mario from a ledge that is 8.5 m tall. Assume that gravitational acceleration in the Mushroom Kingdom is the same as on Earth.

Determine how long each hammer in in the air.

## Homework Equations

vfy^2=viy^2+2g ⋅Δ(y)

vfy=gt+viy

## The Attempt at a Solution

I tried the method of using the equation: vfy^2=viy^2+2g⋅Δ(y) to find vfy; then I substituted the known values so that it would be vfy^2=(17⋅sin51)^2⋅2(-9.8)(8.5) which I found that vfy=2.818375277.

Then I substituted this value to the equation vfy=gt+viy which gave me 2.818375277=-9.8t+(17⋅sin51); this gave me the time of 1.06052127. However, when I input this solution into the answer option it says that I was incorrect. I don't know what/how I messed up, help would be greatly appreciated.