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Dane;
m=5[kg].
g=10[m/s2].
t=3[s].
Wzór:
Ek=(mV2)/2.
V=gt.
Ek=(m*g2*t2)/2.
[Ek]=[J].
Obliczenia:
Ek=(5*100*9)/2=4500/2=2250[J].
Odp.Po 3[s] ciało posiada energię Ek=2250[J].