Seekor burung sedang melayang terbang pada ketinggian 10m diatas tanah dengan kecepatan konstan sebesar 10m/s .Jika massa burung adalah 2kg , tentukan : a) Energi kinetika burung . b) Energi Pontesial burung. c) Energi mekanik burung .
*pakai caranya tolong yaa
RetnaningDyah
Ek = 1/2 x m x v² = 1/2 x 2 x 10² =100 J Ep = m x g x h = 2 x 10 x 10 = 200 J Em = Ek+Ep = 100+200 = 300 J
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DeviAgustini
A). EK = 1/2 mv² = 1/2 x 2 x 10 = (2×10) :2 = 20 : 2 = 10 joule b). EP = m × g × h = 2 × 10 × 10 = 200 joule c). EM = EP+ EK = 200 + 10 = 210 joule
Ep = m x g x h = 2 x 10 x 10 = 200 J
Em = Ek+Ep = 100+200 = 300 J
= 1/2 x 2 x 10
= (2×10) :2
= 20 : 2
= 10 joule
b). EP = m × g × h
= 2 × 10 × 10
= 200 joule
c). EM = EP+ EK
= 200 + 10
= 210 joule