Page 44 - IMPULS DAN MOMENTUM

MELAKSANAKAN RENCANA

−(16 − 10) m s ⁄ = −
′
′
⃗
⃗
2
1
′
′
−6 m s ⁄ = −
⃗
⃗
2
1
−6 m s ⁄ − = −
′
′
⃗
⃗
1
2
′
6 m s ⁄ + = ….(1)
′
⃗
⃗
1
2

+ = +
′
′
⃗
⃗
⃗
⃗
1 1
2 2
2 2
1 1
′
(1,4 kg)(16 m s ⁄ ) + (2 kg)(10 m s ⁄ ) = (1,4 kg)( ⃗ ) + (2 kg)( ⃗ )
′
2
1
′
22,4 kg m s ⁄ + 20 kg m s ⁄ = (1,4 kg)( ) + (2 kg)( )
′
⃗
⃗
1
2
42,4 kg m s ⁄ = (1,4 kg)( ) + (2 kg)( ) ….(2)
′
′
⃗
⃗
1
2

Substitusi Pers (1) ke pers (2)
′
′
42,4 kg m s ⁄ = (1,4 kg)( ) + (2 kg)(6 m s ⁄ + )
⃗
⃗
1
1
42,4 kg m s ⁄ = (1,4 kg)( ) + (12 kg m s ⁄ )(2 kg )
′
′
⃗
⃗
1
1
42,4 kg m s ⁄ − 12 kg m s ⁄ = 1,4 kg + 2 kg
′
′
⃗
⃗
1
1
30,4 kg m s ⁄ = 3,4 kg
′
⃗
1
30,4 kg m s ⁄
′
=
⃗
1
3,4 kg
′
⁄
⃗⃗⃗ = ,
Hasil substitusikan ke dalam pers (1)
′
⃗
1
′
6 m s ⁄ + 8,94 m s ⁄ =
⃗
2
′
⁄
⃗⃗⃗ = ,

Cobalah cek
⃗
1
′
′
−( − ) = −
⃗
⃗
⃗
⃗
1
1
2
2
−( − 10 m s ⁄ ) = (8,94 m s ⁄ ) − (14,94 m s ⁄ )
⃗
1
− + 10 m s ⁄ = −6 m s ⁄ MENGECEK KEMBALI
⃗
1
− = −6 m s ⁄ − 10 m s ⁄
⃗
1
= 16 m s ⁄
⃗
1
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