ini gumna caranya kk

12.)

Dik :
m = 2 gram = 0.002 kg
v = 250 m/s

Dit :
Ek = ...?

Jawab :

Ek = 1/2 × m × v^2
= 1/2 × 0.002 × (250)^2
= 1/2 × 0.002 × 62500
= 1/2 × 125
= 62,5 Joule


13.)

Dik :
m = 80 gram = 0.08 kg
v = 400 m/s

Dit :
Ek = ....?

Jawab :

Ek = 1/2 × m × v^2
= 1/2 × 0.08 × (400)^2
= 1/2 × 0.08 × 160000
= 1/2 × 12800
= 6400 Joule


#semogamembantu