(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A projectile is shot upward from the top of a cliff in an angle of 25 with a velocity of 195 m/s.The height of the cliff is 315m. What will be its speed when it strikes the ground below? (Use conservation of energy)

2. Relevant equations

Ok...initial energy = final energy

Initial energy = .5m*(initial velocity square) + mgy

Final energy = .5m*(final velocity square)

initial velocity = sin*theta*upward initial velocity = sin25*195

3. The attempt at a solution

So I set them to equal and I got final V to be 114, but it says I had it wrong, canceling out the mass.... I have no clue what I did wrong there...

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# Homework Help: Finding Velocity via Convervation of Energy

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