Welcome to Physics!

Units Review

100

What is the SI base unit of mass?

gram

200

What does the prefix kilo mean?

Base times 100.

300

What does the prefix milli mean?

1/1000 of the base unit.

400

What does the U.S. use instead of the SI or metric system?

The U.S. Customary System (foot, inch, mile, pound, bushel, peck, tablespoon, etc.)

500

What is a derived unit of force defined as a kilogram-meter per second squared?

The Newton.

Scientific Notation Review

100

What is 1.6x10⁹?

1,600,000,000

200

What is 5.03x10^-2?

.0503

300

Simplify 

(8*10^-4)/(2*10^-1)

 8/2  x 10^-4-(-1) = 4x10^-3

400

Simplify (4x10⁵)(2x10^-8)

(4x2) x 10^5+(-8) = 8x10^-3

500

Simplify

((0.00016*10^-7)(5000)(0.0004))/((2000*10^4)(0.0001))

16x10^-15

Significant Digits Review

100

All ____ digits are significant.

nonzero

200

All ____ zeros are significant.

interior

300

Trailing zeros after the _____ _____ are significant.

decimal point

400

Leading zeros after the decimal point but before the first nonzero digit are/are not significant.

Example: 0.00046

are not

500

How many significant figures are in the following number?

26.2300 cm

6

Conversions Review

100

Convert 42.0 feet to inches.

504 in.

200

Convert 4200 ft/sec to mil/min.

1 mi = 5280 ft

47.7 mi/min

300

Convert 40 mi/hr to m/min.

1 in = 2.54 cm

1000 m/min

Why not 1072.896 m/min?

400

Convert 6 ft² to m².

0.6 m²

500

Convert 42.0 ft³/sec to m³/min

71.4 m³/min

not 71.358453 m³/min

Trigonometry

100

Another name for a number.

What is a scalar?

200

A quantity that has both a magnitude and a direction.

What is a vector?

300

Adjacent over Hypotenuse

What is cosine theta?

400

Opposite over Hypotenuse

What is sine theta?

500

Opposite over Adjacent

What is tangent theta?