1. The problem statement, all variables and given/known data I've been absent for quite a bit in school and I have a lot of homework and catching up to do. I've been looking for many resources at hand which can help me understand these problems but so far the book is not helping me. I missed some of the vector lessons, a lot of the friction lessons and we are already into Projectiles launched at an angle. So here are my problems: 1) In a scene in an action movie, a stuntman jumps from the top of one bulding to the top of another buliding 4.0 meters away. After a running start, he leaps at an angle of 15 degrees with respect to the flat roof while traveling at a speed of 5.0 m/s. Will he make it to the other roof, which is 2.5m shorter than the building he jumps from? 2) Salmon often jump waterfalls to reach their breeding grounds. Starting 2.00 m from a waterfall 0.55 m in height, at what minimum speed must a salmon jumping at an angle of 32.0 degrees leave the water to continue upstream? 2. Relevant equations 1) I have been using the following equations to solve the answer but I'm not even sure what I am looking for :s. vf2 = vi2 + 2ad d = (vf2 - vi2) / 2a To see the maximum total vertical distance a = (vf - vi) / t t = (vf - vi) / a For the time he is in the air. 2) Really have no idea what I even did. a^2 + b^2 = c^2. 3. The attempt at a solution 1) 5(sin(15))= 1.295 m/s. 5(cos(15))= 4.83 m/s. T= (0-1.295)/(-9.81) = 0.264 seconds. (1.295^2-0)/(2(-9.81))= 0.085 m = Dy. 4.83m(0.264s) = 1.275198 m. Not sure what I even did, but it is some relevant work to this problem. I'm not sure what I am even looking for and if someone could please help it would be appreciated. 2) I was really confused when I tried this problem, any help would be appreciated. Will edit if proof is needed for attempt.