4). Convert:

 

a). 42 inches per second to feet per hour _____________

 

 

b). 84 inches per second to feet per hour _____________

 

 

5). It is 2450 miles between Chicago and Los Angeles. How long will a train traveling at 70 miles per hour take for this trip?

 

 

____________

 

6). Lewis and Clark traveled the 4162 miles from St. Louis to the mouth of the Columbia River in 16 months. Assuming there are 30 days per month, how many miles did they cover (on average) in one day?

 

 

____________

 

7). The speed of light is approximately 186,000 miles/second. How many minutes does it take light from the sun to get to the earth? (Earth is approximately 93 million miles from the sun).

 

 

____________