Respostas

2014-01-13T10:26:30-02:00
m= 1500 kg
v= 20 m/s

Ec= m. v²/2
Ec= 1500. (20)²/2
Ec= 1500. 400/2
Ec=300000 J
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2014-01-13T10:42:10-02:00
Ec=mv²/2

Ec=1500.20²/2

Ec=300000 J
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