Question

Caculate the speed of an object if it covers 150 meter in 30 seconds​

Answer 1

Answer:

speed=50m/s

Step-by-step explanation:

speed=distance/time

s=150/30

s=50m/s

Answer 2

1000m=1km

1m=1/1000km

Then,150m=1/1000km×150m=15/100km=0.15km

Again,3600sec=1hour

1sec=1hour/3600sec

30sec=1hour/3600sec×30sec=1/120hour

speed=distance/time

speed=0.15/1/120hour=18km/h