Calculate the speed for the following:
1. 20 miles, 5 minutes
2. 60 km, 3 hours
3. 1 second, 15 cm
* Be sure to include the correct unit of measurement!
1. 20 miles, 5 minutes
2. 60 km, 3 hours
3. 1 second, 15 cm
* Be sure to include the correct unit of measurement!