vi = velocidad inicial =7m/s
g = gravedad = 10m/s^2
vf = velocidad final =vf = ?
vf =vi +gt
vf = 7 + 10*3
vf= 7+30 =37m/s
h = distancia
h =vi*t +gt^2/2
h = 7*3 +10*3*3/2
h = 21 + 45
h=66m
vf^2 = vi^2 +2gh
vf^2 = 7*7 +2*10*14
vf^2 =49+280
vf^2=329 saco raiz
vf = 18,13m/s