Dik: V0 = 72km/jam ⇨ 20m/s
t = 2,5
Vt = 36km/jam ⇨ 10m/s
dit: A) a?
B) vt? jika t=1
C) Vt? jika t=3
D) s?
jawab:
A) vt = v0 - a.t
⇨20 = 10 - a . 2,5
⇨10 = 2,5a
⇨a = 4m/s2
B) Vt = V0 - a.t
⇨ =20 - 4.1
⇨ =20 - 4
⇨ =16m/s
C) vt = v0 - a.t
⇨ =20-4.3
⇨ =20-12
⇨ =8m/s
D) S=v0t-1/2at^2
⇨ =20.2,5-1/3.4.2,5^2
⇨ =50-12,5
⇨ =37,5m