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v0 = 72 km/jam = 20 m/s
t = 2 menit = 120 s
a = 5 m/s²
ditanyakan
s = ... ?
vt = ... ?
jarak yang ditempuh
s = v0 x t + 0,5 x a x t²
s = 20 x 120 + 0,5 x 5 x 120²
s = 2400 + 0,5 x 5 x 14400
s = 2400 + 36000
s = 38400 m = 38,4 km
kecepatan akhir
vt = v0 + a x t
vt = 20 + 5 x 120
vt = 20 + 600
vt = 620 m/s
t = 2
A = 5
jarak = v.a / t
= 72.5 / 2
= 180
semoga dpt membantu.:)