v= 54000/3600= 15 Ek= 337,5 m-?
Ek=mv^2/2
m= 2Ek/v^2 = 337,5*2/225 = 3
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v= 54000/3600= 15 Ek= 337,5 m-?
Ek=mv^2/2
m= 2Ek/v^2 = 337,5*2/225 = 3