QUIZ BRAINLY SYARAT: ●PAKAI CARA ●JAWAB SEMUA(2,3,4) ●JANGAN JAWAB ASAL ●SEMANGAT ●TELITI >SOALNYA ADA DI GAMBAR OK.< *GOODLUCK*

2.]
m = 2 ton
Ek = 225 kJ
s = 75 m
vₜ = 0

a = __ ?

Ek = ½ m v₀²
(225 kJ) = ½ × (2 ton) × v₀²
v₀ = 15 m/s

vₜ² = v₀² - 2as
0² = 15² - (2 × 75)a
225 = 150a
a = 1,5 m/s²

3.]
KM = 1

Jika W = 40 N , maka F juga 40 N ⬅ Jawab

4.]
α = 10⁻⁵ /°C ... anggap
s = 20 cm , L₀ = 400 cm² = 4 × 10⁻² m²
ΔT = 50 °C

% ΔL = __ ?

ΔL = L₀ (2α) ΔT
ΔL = (4 × 10⁻² m²) × (2 × 10⁻⁵ /°C) × (50 °C)
ΔL = 0,00004 m²
% ΔL = 0,004 %