Name__________________________________ Date____________
Period________
UNIT ANALYSIS WORKSHEET #1
Are the following conversions done correctly? If not explain what was done wrong.
1. Rod Woodson has been clocked at 4.4 seconds in the 40 yard dash. How many
miles per hour is this?
40yds 3 ft 1mile 60sec 60 min 40 * 3*1* 60 * 60 432000
*
*
*
*
=
=
= 81mph
4.4sec 1yd 5280 ft 1min
1hr
1* 5280 *1*1
5280
2. You are driving your car in France; the speed limit is 85 k/h. Your speedometer only
has miles per hour. How fast can you go?
85k
1k
85
*
=
=136.8m / h
1hr 0.6214mi 0.6214
Use unit analysis to solve.
3. 60 miles an hour is how many feet per second?
Remember:
1 hour = 60 minutes
1 minute = 60 seconds
1 mile = 5280 feet
4. 3000 milliliters in 18hours is how many liters per day?
Remember: 1 cL = 10 mL
1dL = 10 cL
1 L = 10 dL
1 day = 24 hours
5. How many seconds are there in a year?
Remember:
1 year = 365 days
1 day = 24 hours
Cancel like units where possible, reduce the fraction and write the final answer with
appropriate units.
6.
miles
75 hour x 2 hours
90 miles
7. 2 hours
8.
miles
80 miles ÷ 50 hour
5 miles
60 minutes
9. 10 minutes x 1 hour
1 mile
60 minutes
10. 20 minutes x 1 hour
12. How many hours are in a fortnight?
miles 5280 feet
1 hour
11. 60 hour x mile x 3600 seconds