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Diketahui :
t = 0,01 s
p = 4 kgm/s
Ditanyakn : F ?
Dijwab :
F = p x 1/t
= p/t
= 4/0,01
= 400 N (E)
1][
t = 0,01 s
Δp = 4 kg m/s
F = __ ?
Impuls = perubahan momentum
I = Δp
F · t = Δp
F · (0,01) = 4
F = 4/0.01 = 400 N ← jawaban [E]
2][
Momentum awal p
Momentuk akhir p1 dan p2 yang membentuk sudut 90º
HKM
Jumlah momentum awal sama dengan jumlah momentum akhir
p = √[ p1² + p2² ] = (p1² + p2²)^½ ←
Ok ?