Tolong dijawab plisss

Dik = W = 1.960N
v = 72Km/jam
g = 9,8 m/s² = 9,8N/Kg
Dit = E.kinetik =....?
Jwb= m = W/g
= 1960N/9,8 N/Kg
= 200Kg
v =(72 x 1000)/3.600s = 20m/s
Ek=1/2 x m x v²
= 1/2 x 200Kg x 20²m/s
=1/2 x 200Kg x400m/s
= 100Kg x 400m/s²
= 40.000J
(maaf kalau slh)