Ek=mv²/2- energia kinetyczna
v= a razy t
v=2m/s²·10s=20m/s
Ek=1200kg·400m²/s²:2
Ek=240000J=240kJ
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Ek=mv²/2- energia kinetyczna
v= a razy t
v=2m/s²·10s=20m/s
Ek=1200kg·400m²/s²:2
Ek=240000J=240kJ