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s=25m
t=5s
P=?
W=?
h=g*t²/2
g=h2/t²
F=mg
F=m*h2/t²
F=11000 *2*25/5²
F=22000N
W=F*s
W=22000N*25m
W=550000J
P=W/t
P=550000J/5s
P=110000W