tolong jawab dong pake cara besok dikumpul nih pake cara

ek= 1/2•m•v²
ep= m•g•h

8.
(a) 1/2 50 6 = 150j
(b) 1/2 150 12 = 900j
(c) 1/2 200 4 = 400j
(d) 1/2 400 10 = 200j

jadi yg paling besar benda (b)

9.
(1) 150 10 4 = 6000j
(2) 300 10 5 = 15000j
(3) 600 10 8 = 48000j
(4) 1200 10 1 = 12000j

jd yg paling besar benda (3)