Minta bantuan nya yg bisa No brp aja

1.
m = 2 kg
F = 100 N
v1 = 5 m/s
v2 = 15 m/s

a) I = ∆P = m . (v2-v1) = 2 . (15-5) = 2 . 10
I = 20 kg m/s

b) I = F . ∆t
20 = 100 . ∆t
∆t = 1/5 s