tolong dijawab???beserta caranya

GLB
v = 90 km/jam = 25 m/s
t = 30 menit = ½ jam = 1800s
S = __?

jarak tempuh
S = v t

S = (90 km/jam) (½ jam)
S = 45 km = 45000 m ←

atau

S = (25 m/s) (1800 s)
S = 45000 m ←