We know that there are 24 hrs in a day, 60 min in a hr, and 60 sec in an min. Putting all this together, we get:

1day*24hr/day*60min/hr*60sec/min

86,400 sec in a day.

No we can solve your question.

d = v*t

d = 7500cm/sec * 86,400sec

d = 648,000,000 cm/sec

To convert cm to km, we know that:

1cm = 1/100m and

1m = 1/1000km

So, we multiply these two fractions to get

1cm = 1/100000km

Finally, we multiply this conversion factor by our answer to get our answer in km.

648,000,000/100,000 = 6480km in one day.

When we multiply v (which is in cm/sec) by t (which is in sec) we are left with the unit of cm.

Hopefully this makes sense.