45 km/jam=…….m/detik

45 km/jam = … m/detik

45 km = 45 × 1000 = 45.000 meter
1 jam = 60 menit × 60 = 3.600 detik

45 km/jam=…….m/detik
= 45.000/3.600
= 12,5m/detik