Algebra
Solve for x: 3x + 5= 20
x = 5
Convert 5,700,000 to scientific notation.
5.7×106
Convert 5000 mm to meters.
5 meters
What is slope intercept form? What variables represent the slope and y-intercept?
y = mx + b
m = slope, b = y-intercept
How do accuracy and precision differ?
Accuracy describes how close a measurement is to the true value, while precision describes how consistent repeated measurements are.
Solve for a: 3a + 4 = 10
a = 2
What are the 3 fundamental SI units in physics?
Kilograms (kg), meters (m), and seconds (s), oh my!
Convert 2500 mg to grams.
2.5 grams
Given the two points on a line, calculate the slope.
(5,0) and (-3, 4)
m = - 1/2
A student measures a 100 cm long block. Their measurements are 96.2 cm, 96.3 cm, 96.2 cm, and 96.3 cm. Are the measurements accurate, precise, both, or neither?
Precise, but not accurate. The measurements are consistent but not close to the true value.
Solve for b: 8(b−2) = 3(2b+5)
b = 3.5
Which SI unit would you use to measure the mass of a grain of rice?
Milligram (mg) or microgram (µg)
Convert 2.5 L to mL.
2500 mL
Given the two points on a line, determine the y-intercept.
(5,0) and (-3, 4)
b = 5/2 or 2.5
A student measures a 100 cm long block. Their measurements are 96.2 cm, 96.3 cm, 96.2 cm, and 96.3 cm. What type of error occurred here?
Systematic error - consistent procedural mistakes.
Parallax error - student read ruler at an angle.
Zero error/human error - student misjudged the location of the zero marker on the ruler.
Solve for n: A = 3n + 5A
A = 29
n = 8
Convert 0.000034 to scientific notation.
3.4×10−5
Convert 0.045 kg to mg.
45,000 mg
Given the two points on a line, determine the equation of the line in slope intercept form.
(5,0) and (-3, 4)
y = -1/2 x + 5/2
y = -0.5x + 2.5
What is the percent error if the measured value is 8.2 g/cm³ and the actual value is 8.9 g/cm³?
7.87%
Solve for vi: vf2 = vi2 + 2ad
vi= Sqrt(vf2 − 2ad)
What SI unit and prefix would you use to measure the height of a mountain?
Kilometer (km) or meter (m), depending on context
Convert 2.5 weeks to seconds.
1,512,000 seconds OR 1.512 X106 seconds
Graph the following equation: y = -2x +4
Type it into desmos!
A student is electronic balance to measure the mass of a block. The actual length is 100 g. The student records the following measurements: 97.5 g, 100.2 g, 98.9 g, 101.1 g.
What type of error occurred here?
Random error - errors cause inconsistent results, even if the average is close to the true value.