Page 76 - MODUL MOMENTUM DAN IMPULS
P. 76
0,6
484 × 10 −4 =
ℎ
−1
6 × 10
ℎ =
484 × 10 −4
6
3
ℎ = × 10
484
ℎ = 0,012 × 10
3
ℎ = 12
jadi ketinggian pohon kelapa adalah 12 m
4. Dik :
= 2
= 4
= 10 /
= −(4 / )
′
′
Dit: ?
Jawab :
• Berlaku hukum kekekalan momentum
′
∑ = ∑
′
′
+ = +
′
+ = +
′
′
′
2 . 10 / + 4 (−4 / ) = 2 . + 4 .
′
′
20 / − 16 / = 2 . + 4 .
′
′
4 / = 2 + 4 . ( 2)
′
′
2 / = + 2 . . . . (1)
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