You and a friend stand on a snow-covered roof. You both throw snowballs from an elevation of 14 m with the same initial speed of 13 m/s, but in different directions. You through your snowball downward, at 40° below the horizontal; your friend throws her snowball upward, at 40° above the horizontal. What is the speed of each ball when it is 5.0 m above the ground? (Neglect air resistance.) m/s (your snowball) m/s (your friend's snowball) 15.7 m/s is what I keep getting... I did 13m/s sin 30 = 8.3 and.. i used that for Vf^2 = vi^2 + 2ax and used -9 for x and -9.81 for a... well 15.7 is not right... any thought?