Jawab:
Penjelasan dengan langkah-langkah:
s1 = 20 km
v1 = 24 km/jam
t1 = waktu tempuh sebelum jam 7
t1 = 20 menit
t1 = 20/60 jam = 1/3 jam
t = waktu tempuh sesudah jam 7
s1 = v1 × t1 + v1 × t
20 = 24 × 1/3 + 24 × t
20 = 8 + 24t
20 - 8 = 24t
12 = 24t
t = 12/24
t = 1/2 jam
s2 = 36 - s1
s2 = 36 - 20
s2 = 16 km
kecepatan hartono
v = s2 ÷ t
v = 16 ÷ 1/2
v = 16 × 2
v = 32 km/jam
jawaban nya : D. 32 km/jam
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Jawab:
Penjelasan dengan langkah-langkah:
s1 = 20 km
v1 = 24 km/jam
t1 = waktu tempuh sebelum jam 7
t1 = 20 menit
t1 = 20/60 jam = 1/3 jam
t = waktu tempuh sesudah jam 7
s1 = v1 × t1 + v1 × t
20 = 24 × 1/3 + 24 × t
20 = 8 + 24t
20 - 8 = 24t
12 = 24t
t = 12/24
t = 1/2 jam
s2 = 36 - s1
s2 = 36 - 20
s2 = 16 km
kecepatan hartono
v = s2 ÷ t
v = 16 ÷ 1/2
v = 16 × 2
v = 32 km/jam
jawaban nya : D. 32 km/jam