Physics Unit 1 (The Science of Physics)

101 and 102 notes

mechanical physics examples (2)

falling objects and spinning objects

electromagnetism examples (2)

electrical charge and batteries

what is the scientific method?

the systematic process used to acquire knowledge, solve problems, and answer questions through observation and experimentation

standard of measurement

metric system

SI unit

standard international unit of measurement

Zeros between numbers significant or not?

significant

zeros in front of numbers significant or not?

not

zeros to the right of a decimal significant or not?

significant

zeros at the end of a number before the decimal significant or not

not

add and subtract rule

round the final answer to the last column of numbers from the right

multiply or divide rule

answer is the same as the smallest number of significant figures

rounding down

• 0, 1, 2, 3, 4 after a digit

• digit is even and followed by a 5

rounding up

• 6, 7, 8, 9 after a digit

• odd number followed by a 5

• digit following last significant number is a 5 followed by a non zero

Mean Value Formula

Total value number /

number of values

percentage error %

experimental value - value actual x 100 / value actual