Question

Tolong dong nomor 15.. makasih..

Answer 1

Verified answer

DINAMIKA
• Gaya

m = 1 ton = 1000 kg
Vo = 72 km/jam = 20 m/s
Vt = 0
F = __?

I = ∆p
F t = m (Vt - Vo)
F • 10 = 1000 (0 - 20)
F = -2000 N ← jwb


atau

percepatan
Vt = Vo + a t
0 = 20 + a • 10
a = -2 m/s²

gaya
F = m a
F = 1000 • (-2)
F = -2000 N ← jwb

BESAR gaya 2000 N
ARAH gaya berlawanan dengan arah gerak semula