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saat benda blm dijatuhkan ek =0
jadi,
em=em
ep+ek=ep+ek
mgh + 1/2mv^2 = mgh + ek
500x10x5 + 1/2×500x0^2 = 500x10x2 + ek
25000 = 10000 + ek
ek = 15000
h1=0,05m? (sepertinya soalnya salah deh)
h2=2m
Ek+Ep=Ek+Ep
Ek1⇒v=o sehingga
Ep=Ek+Ep
m.g.h=Ek+mgh
0,5.10.0,05=Ek+0,5.10.2
0,25=Ek+10
Ek=-9,75
misal h1nya 5 meter, Ek-nya=15