Question

1.Rubah satuan besaran kesatuan m/s!
a. 36 km/jam
b. 54 km/jam
c. 18 km/jam
2.Sebuah benda bergerak dengam kecepatan tetap 108 km/jam. berapa jarak tempuhnya selama:
a. 30 menit
b. 90 menit

Answer 1

1)
a. 10m/s
b. 15m/s
c. 5m/s

2)
a. 54 km
b. 162 km

Answer 2

1a. 36 km/jam = 36 x 1000 m / 3600 s = 36.000/3.600 m/s = 10 m/s
b. 54 km/jam = 54 x 1000 m / 3600 s = 54.000/3.600 m/s = 15 m/s
c. 18 km/jam = 18 x 1000m / 3600 s = 18000/3600 m/s = 5 m/s

2. Pada v = 108 km/jam
a. jarak tempuh 30 menit
t = 30 menit = 30/60 jam = 1/2 jam
s = v.t = 108 km/jam x 1/2 jam = 54 km = 54.000 m

b. jarak tempuh 60 menit
t = 60 menit = 60/60 jam = 1 jam
s = v.t = 108 km/jam x 1 jam = 108 km = 108.000 m