# AP Physics

# Ch 1 - Measurement

# Objectives

## After completing chapter 1, you should be able to:

### Significant Digits:

- tell how many significant digits a measurement contains.
- make calculations with the correct number of significant
digits.

### SI:

- be able to name the base SI units for length, time, and
mass.
- be able to state, in general, how the SI units for length,
time,and mass are defined.
- know the common SI prefixes (boldface in table 1-2)

### Units Conversion:

- be able to convert a measurement from one unit to another
appropriate unit, given suitable conversion factors.
- be able to solve simple numerical problems involving units
conversions

### Lab:

- recognize that no measurement is exact.
- estimate the precision/uncertainty/error of a measurement, and
give appropriate reasons.
- state the precision/uncertainty/error of a measurement
appropriately.
- calculate the precision/uncertainty/error of the result of a
calculation.
- discuss the difference between precision and accuracy.

last update August 18, 2002 by JL
Stanbrough