Page 58 - MODUL MOMENTUM DAN IMPULS_Neat

′
= 12

6. B
+ = ( + )
′

1

2 2
′
5 . + 3 ൬− ൰ = (5 + 3 )

′
10 − 6 = 8

′
4 = 8

4
′
=
8

′
= 0,50

7. A
= =

ℎ (+) ℎ (−)

= 5 , = −5

 Berlaku hukum kekekalan momentum
′
′
+ = +

′
′
+ = +

′
′
5 − 5 = +

′
0 = +
′

′
′
− = … . . (1)

 Karena lenting sempurna maka koefisien restitusi = -1, sehingga
′
′
−

=
−

′
− ′

1 =
−5 − 5

′
′
−10 = − … . (2)

 Subsitusi persamaan (1) ke (2)
−10 = −
′
′

′
′
−10 = − (− )

′
−10 = 2

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