Page 44 - impuls dan momentum

MELAKSANAKAN RENCANA

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

′
⃗ + ⃗ = ⃗ + ⃗
′
2 2
1 1
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)
′
′
2
1

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
2
1
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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