minta tolong, beserta caranya :)

MOMENTUM

m, F, Vo = 0, Vt, ∆t
m, 3F, Vo = 0, Vt, ∆t' = ___?

I = ∆p
F ∆t = m (Vt - Vi)
F ∆t = m Vt
∆t = m Vt / F

perbandingan
∆t' / ∆t = [m Vt / 3F] / [m Vt / F]
∆t' / ∆t = ⅓
∆t' = ⅓ ∆t ← jwb