Question

2. A rocket travels at a speed of 15,000 m/s. Express this speed in km/h. grade 7

Answer 1

Answer:

54000km/h

Explanation :-

15000m/1000 = 15km

1 hr = 3600s

(15×3600)km/h

54000km/h

Answer 2

Answer:

the speed of rocket is 15000m/s

change the km/hr in m/sec so = X x 1000/3600

we change m/sec in km/hr = X x 3600/1000

15000 X 3600/1000 = 54000 km / hr