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3 respostas

Diego...Use a fórmula, de novo e de novo...

Ec = (massa x velocidade²) / 2
Ec = (700 x 20²) / 2
Ec = (700 x 400) / 2
Ec = 280.000 / 2
Ec = 140.000 Joule

2006-11-21 06:53:30 · answer #1 · answered by Beakman 5 · 0 0

E=v²*m/2

E=20²*700/2
E=400*350
E=140000 J

E=140 kJ

2006-11-21 15:00:16 · answer #2 · answered by Luiz S 7 · 0 0

Que eu me lembre

E= 0,5 x mv^2

E= 0,5 x 700x 20^2= 140.000 joules

2006-11-21 14:41:12 · answer #3 · answered by Luiz Sabra 7 · 0 0

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