Question

Frida hits a volleyball so that it moves with an initial velocity of 6.76 m/s straight upward. If the volleyball starts from 1.84 m above the floor, how much time will it be in the air before it strikes the floor?

Answer 1

hf=hi+v*t-1/2 g t^2
0=1.84+6.76t-4.8t^2
solve the quadratic