1. The problem statement, all variables and given/known data A hang gilder runs off a cliff, with a speed of 3 m/s. What is its overall velocity after 5 seconds? Some constants like gravity are rounded because this is an MCAT problem. 2. Relevant equations v=v(initial) + at a^2 + b^2 = c^2 3. The attempt at a solution vertical velocity: v=v(initial) + at 0=v(initial) + at v(initial) = -at = (-10 m/s)(5s) What i find strange is that in the solution manuel for this problem, 0.5 seconds is used for time, giving the overall vertical velocity -5 m/s. Then you find the overall velocity with pythagorean's theorum, but what is strange is instead of using 3 m/s for the horizontal velocity, 9 m/s is used instead! : v= (9^2 + -5^2)^(1/2) Making it just a tad over 10. Why is 0.5 seconds used instead of 5 seconds? And why is 9 used instead of 3?? Thank you!