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s³ = 5.832.000
s = ∛5.832.000
s = 180 dm
= 18 m...................opsi D
28. s = 90 km
t = 08.10 - 06.40
= 1,5 jam
v = s/t
= 90/1,5
= 60 km/jam............opsi A
28. WAKTU = 06.40 - 08.10 = 01.70 = 02.10
Jarak = 90 km
Kecepatan = ?
K=
90 x = 135 km/jam (D)