Jawabannya yang mana?bingung

massa motor = 80 kg

percepatan yg dialami motor :
a = Vt - Vo / t
a = 20 - 5 / 10
a = 15/10
a = 1,5 m/s²

gaya dorong yg dialami motor :
F = m . a
F = 80 . 1,5
F = 120 N

perpindahannya :
vt² - Vo² = 2 as
20² - 5² = 2(1,5) s
400 - 25 = 3s
375 = 3s
s = 375/3
s = 125 meter

usaha :
W = F . s
W = 120 . 125
W = 15000 J ?

p = W / t
p = 15000 / 10
p = 1500 Watt