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Dane:
m=2kg
t=1min.=60sek.
a=2m/s kwadr.
Szukane:
Ek=?
v=?
Ek=mv kwadr./2
Rozw.:
a=v/t /^t
v=a^t=2m/s kwadr.^60s=120m/s
Ek=2kg^(120m/s)kwadr./2=120^120J=14400J.
Odp:Ciało uzyska energię 14400J.
a=V/t
V=a*t
E=2kg*(2m/s²*60s)₂/2
E=14400kg*m/s