Question

A school bus covers
a distance of 7 km in
half hour, calculate the speed of school bus in
following units al meter/second,
centimeter / second , Kilometer / hour​

Answer 1

1/2 hr ------------> 7km

therefore, 1 hr = 7*2= 14 km

1.   conversion of 14km/hr in m/sec --

14*1000/60*60=  3.89m/sec

2.   conversion of 14 km/hr in cm/sec --

14*1000*100/60*60= 388.89cm/ sec

3.  14km/hr is already in the form of km/hr therefore no conversion needed in this case

HOPE YOU UNDERSTAND!!!