Respostas

2013-06-26T14:04:01-03:00

Ep=m*g*h

Ep=5*10*20

 

Ep= 1000 Joules.

 

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Potencia = trabalho/tempo

 

Potencia = 1000/10

 

Potencia = 100W

 

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5 5 5
2013-06-26T15:26:02-03:00

Potencia= trabalho/tempo

P= F.d/t

P= m.a.d/t

P= m.a.v

P= 5.10.20/10

P= 100 W