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Vo=0m/s
a=2m/s^2
t=5s
W=?
W=F*s
F=am
F=2*4
F=8N
s=at^2/2
s=2*5^2/2
s=2*25/2
s=25m
W=8*25=200J
m=4kg
a=2m/s²
t=5s
F=axm
F=2x4=8N
s=axt²:2
s=2x25:2
s=25m
W=Fxs
W=8Nx25m=200J
F=4kg*2m/s2=8N
W=F*s
W=8N*5s=40kg*m/s