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2.<br />
3.<br />
4.<br />
5.<br />
6.<br />
1<br />
mv<br />
2<br />
v = kecepatan<br />
2<br />
Ek = W = usaha<br />
F = Gaya<br />
= s = jarak<br />
= Ep Ek<br />
Ep = Energi Potenaial<br />
m = massa benda<br />
g = percepatan gravitasi<br />
Ep m⋅g<br />
⋅h<br />
Emek +<br />
w= ΔEk<br />
h = ketinggian benda dari tanah<br />
w= ΔEp<br />
Em = Energi mekanik<br />
7. HKE (Hukum Kekekalan Energi)<br />
1.<br />
2.<br />
3.<br />
Ek + Ep = Ek + Ep<br />
1<br />
P m⋅v<br />
1<br />
2<br />
2<br />
Ek = Energi Kinetik<br />
MOMENTUM–IMPULS–TUMBUKAN<br />
= P = momentum<br />
m = massa<br />
= F⋅<br />
t<br />
v = kecepatan<br />
I = impuls<br />
I Δ<br />
I = ΔP<br />
I = m<br />
( v v )<br />
t −<br />
0<br />
4. HKM (Hukum Kekekalan Momentum)<br />
m<br />
A<br />
′ ′<br />
⋅v A + mB<br />
⋅vB<br />
= mA<br />
⋅v<br />
A + mB<br />
⋅vB<br />
arah kekanan v +<br />
arah ke kiri v -<br />
F= gaya<br />
∆t = selang waktu<br />
21
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