darurat nih tolongg yaaa

1][
F = m a
F = m ∆v / t
F = 800 (60-10) / 10 = 4000 N ✓

2][
F1 / A1 = F2 / A2
F1 = (A1 / A2) • F2
F1 = (1/100) • 5000 = 50 N ✓

4][
v = S / t
v = 45 / 3 = 15 m/s ✓