- #1

picklepie159

- 19

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**Ball launched off a cliff at negative angle...**

## Homework Statement

So a ball is launched off a cliff 60 meters high

It is thrown at -15 degrees horizontal, and lands 120 meters away.

Find the V-initial, V-final, Time in air, and Angle at which it hits the ground

## Homework Equations

inverse tan(75)= Vx/Vy

D= VT

h=1/2g t^2

Vx= cosin(75) x V-initial

Vy=sin(75) x V-initial

## The Attempt at a Solution

I know that there's a policy that I have to try to work on the problem first before i get help, but man, I am lost. This is what I can make out.

I switched everything to positive so now its falling off the cliff at 75 degrees.

120 meters = Vx T

That's all. A little ray of guidance would be a Godsend.

PS

Would the Velocity-y be V-initial +34.6 m/s?

Because when something falls 60 meters from rest, the final velocity is 34.6 meters.

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