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Name ________________________________ Period _______ Date _______________

Chapter 2 part II – Day 1: Dimensional Analysis

DO NOW: 1) Fill in the chart with as many conversion factors as you can remember.

U. S. Customary Units of Measurement

| 1 foot = inches | 1 cup = ounces |

| 1 yard = feet | 1 pint = cups |

| 1 mile = feet | 1 quart = pints |

| 1 mile = yards | 1 gallon = quarts |

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| 1 pound = ounces | |

| 1 ton = pounds | |

| | 1 week = days |

| 1 minute = seconds | 1 year = months |

| 1 hour = minutes | 1 year = weeks |

| 1 day = hours | 1 year = days |

Convert:

1) 7920 ft = _____________ miles 2) 147 inches = ____________ feet

3) 5.1 miles = ____________ feet 4) 156 yards = ____________ feet

5) 1½ days = ____________ minutes 6) 12 minutes = ____________ hours

METRIC SYSTEM

1) 12.5 L = _____________ mL 2) 5.2 km = ____________ m

3) 1632 m = ____________ km 4) 14.86 g = ___________ kg

5) 684 m = _____________ cm 6) 46.3mg = ___________ kg

7) 23.6 kg = ____________ g 8) 4 mL = ______________ L

9) 6.5 g = ______________ mg 10) 8,900 cm = __________ km

By the end of this lesson, I will be able to __________________________

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DEMO: Use a series of conversion factors to solve each problem.

1) 0.25 days = _________ minutes 2) 12800 ounces = __________ tons

Use Dimensional Analysis to solve each problem. Round to the nearest tenth.

|At one time, trains were not permitted to go faster then 12 mi/hr. How many yards per minute is this? |

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|A mosquito can fly at 0.6 mi/hr. How many inches per second is this? |

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|An Arctic bird flew 11,000 miles in 115 days. How many feet per minute did the bird average? |

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|A really slow snail travels 3cm in 4 minutes. How fast is this in meters per week? |

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|Katy ran a road race at 0.15 mi/min. How fast is this in feet per second? |

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HOMEWORK PAGE

|1) Some pitchers can throw a baseball as fast as 95 mi/hr. How many feet per second is this? |

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|2) The average person needs 2½ quarts of water each day. How many gallons does the average person need per week? |

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|3) The cheetah, the fastest land animal, has been clocked at a speed of 92.4 ft/sec. Convert the cheetah’s speed to miles per hour. |

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|4) A different cheetah ran 300 ft in 2.92 sec. What was the cheetah’s speed in miles per hour? |

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|5) A sneeze can travel up to 100 mi/hr. How many feet per second is this? |

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|6) Convert 3.8 feet per second to miles per hour. |

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