Fred and George who are identical twins, same body mass, are competing in aerial skiing. Fred hits the take off with a speed of 15.8, whereas George has a speed of 8.3. How much higher will Fred go?

Answer 1

(1/2) m v^2 = m g h
h = (1/2) v^2 /g

h1 - h2 = (15.8^2 - 8.3^2) /(2 g)