Page 79 - Modul Momentum dan Impuls

4. D
∆ = ( − )

∆ = 0,25 (−30 / − 20 / )

∆ = 0,25 (−50 / )

∆ = 12,5 / ( )

5. D

+ = ( + )

0,15 .20 / + 0,1 (−0 / ) = (0,15 + 0,1 )

3 / = 0,25
3

= /
0,25

= 12 /

6. B

+ = ( + )

5 .2 / + 3 (−2 / ) = (5 + 3 )

10 / − 6 / = 8

4 / = 8
4

= /
8

= 0,50 /

7. C
= =

(+) (−)
= 5 / , = −5 /

 Berlaku hukum kekekalan momentum

58