ubahlah kelajuan dibawah ini dalam satuan m / s a. 39 km / jam b. 54 km / jam c. 90 km / jam d. 50 cm / jam

a. 39 km/jam
= 39 x 1000/3600 = 390/36 = 10,8 m/s
b. 54 km/jam
= 54 x 1000/3600 = 540/36 = 15 m/s
c. 90 km/jam
= 90 x 1000/3600 = 900/36 = 25 m/s
d. 50 km/jam
= 50 x 1000/3600 = 500/36 = 13,88 m/s