Amotorist travels a distance of 406 km during a 7 hr period. what was the average speed in (a) km/hr and (b) m/sec?

The average speed was 58 or 16.11

Explanation:

Speed is a physical quantity that expresses the relationship between the space traveled by an object, the time used for it and its direction. Its unit of measurement in the International System (S.I.) is the meter per second .

So:

In this case you know:

Replacing:

Solving:

Taking into account that 1 km is 1000 m and 1 hour is 60 minutes, which in turn is 60 seconds, the unit conversion is performed:

The average speed was 58 or 16.11

their crystal patterns have been disrupted by stress