W=Ek₂-Ek₁+Ep₂-Ep₁
W=Ep₂-Ek₁
0,9Ek¹=Ep₂
0,9mv²/2=mgh
0.9mv²=2mgh
0,9v²/2g=h
h=0,9*100/2*10
h=4,5[m]
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W=Ek₂-Ek₁+Ep₂-Ep₁
W=Ep₂-Ek₁
0,9Ek¹=Ep₂
0,9mv²/2=mgh
0.9mv²=2mgh
0,9v²/2g=h
h=0,9*100/2*10
h=4,5[m]