tolong nomor 14 dan 15

14.)
Ek = 500J
v = 10m/s
m = ?

Ek = 1/2 m v²
500 = 1/2 m 10²
1/2 m . 100 = 500
m = 10kg (C)

15.)
m = 0,5kg
h = 7m
g = 9,8m/s²
Ep=?

Ep = m x g x h
Ep = 0,5 x 9,8 x 7
Ep = 34,3 J

Semoga menbantu...
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