Question

A pitched ball is hit by a batter at a 45-degree angle and just clears the outfield fence, 98 m away. If the fence is at the same height as the pitch, find the velocity of the ball when it left the bat. Ignore air resistance.

Answer 1

how long is in the air?

hf=hi+Viv*time-1/2 g time^2
0=0+Vi*sin45*t-4.9 t^2
solve for t in terms of Vi

then horizontal equation
distance=vi*cos45*t put t in there, and solve for vi

Answer 2

76