UNIT 1 REVIEW TOPICS



UNIT 1 REVIEW TOPICS

λWhat are some advantages of the SI system of measurement?

λWhat are the base units of SI? Why are they called base units?

λWhat are some derived units of SI?

λCan you replace metric prefixes with the appropriate multiplier?

λCan you convert quantities using factor label conversions?

λDo you know the following english-metric conversions? 1 in = 2.54 cm, 1 kg = 2.2 lbs, 1 L = 1.06 qts, 1 mi = 1.609 km

λCan you combine units correctly, and check to see if a formula is dimensionally correct?

λCan you add/subtract/multiply/divide correctly with numbers in scientific notation? Can you identify the number of significant digits in a measurement? How are significant digits related to measurement precision and uncertainty?

λCan you add/subtract/multiply/divide using the correct number of significant digits?

λIs there any such thing as an “exact” measurement?

λWhat is the difference between accuracy and precision?

λWhat factors limit the accuracy and/or precision of an experimental result?

λWhat is the difference between mass, density, weight, and volume?

λWhat kind of things are studied in physics?

λWhat are the functions that describe directly proportional, inversely proportional, linear, and quadratic relationships? What do graphs of these relationships look like?

λCan you identify the independent and dependent variable in an experiment?

λCan you correctly construct a scatter plot of data and describe the type of relationship between the variables?

PRACTICE PROBLEMS

1.If d=4.245 km and t=2.0 hrs, what does d/t equal?

2.Convert your answer to #1 into units of miles/week.

3. The base of a triangle is 4.2 cm and its height is 2.0000 cm. Calculate the area of the triangle (A=1/2 bh).

4.Convert your answer to #3 into units of square feet.

5.4,352 ms + 1.4 s = ?

6.6.235 x 108 – 5.20 x 106 = ?

7.How many cubic millimeters are there in 1.00 quart?

8. If something has a density of 3.0 g/mL, what is its density in units of lbs/ft3?

9.5.4025520 GW + 2.3 kW = ?

10.5,254 lbs / 12 in2 = ?

11.Convert your answer to #10 to kg/m2

12.The density of aluminum is 2.7 g/cm3. Convert this to μg/mm3.

13.What is the volume of an aluminum block with a mass of 1.20 kg? How many liters of water would the block displace if you dropped it in a fish tank?

14.If you cut the block in half (so that each half was 0.60 kg), what would be the density of each half?

15.45.23506 seconds + 2,320,000,000 ns = ?

16.P=F/A

What type of relationship exists between pressure and area? What would a graph of this relationship look like?

17.d=1/2 at2

What type of relationship exists between position and time? What would a graph of this relationship look like? What are the units of a in this formula?

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