Module 2: Foundations In Physics

Question 1

Precision

Answer 1

Precision of a measurement is a measure of how closely spaced repeat readings are

Depends on the size of random errors in the measurement

Question 2

Accuracy

Answer 2

Accuracy is a measure of how close a measurement is to the “true” or accepted value

Depends on random & systematic errors

Question 3

Systematic errors

Answer 3

Affect all of the results in the same way

Question 4

Random errors

Answer 4

Affect each result by a different amount

Question 5

Resolving vector
(And how do you resolve a vector)

Answer 5

Splitting a vector into two perpendicular components

Done by:
•scale diagram
•calculation