Measurements + Kinematics definitions

Question 1

Systematic errors

Answer 1

Errors that result in all readings or measurements being either always above or below the true value by a fixed amount

Question 2

Random errors

Answer 2

Results in all readings or measurements being scattered about a mean value. These errors have equal probability of being positive or negative

Question 3

Accuracy

Answer 3

The degree of closeness of the mean value of the measurements to the true value. It is affected by systematic error

Question 4

Precision

Answer 4

The degree of agreement between repeated measurements of the same quantity. It is affected by random error

Question 5

Distance

Answer 5

The total length of path an object travels

Question 6

Displacement

Answer 6

The distance moved in a specific direction from a reference point

Question 7

Speed

Answer 7

The rate of change of distance travelled

Question 8

Velocity

Answer 8

The rate of change of displacement

Question 9

Acceleration

Answer 9

The rate of change of velo

Question 10

Physical quantity

Answer 10

A quantity containing a numerical magnitude and a unit

Question 11

Base quantities

Answer 11

Physical quantities that are the most fundamental and are independent of each other

Question 12

Derived quantities

Answer 12

Any quantity that can be expressed in terms of one or more base quantities using the defining equation of the quantity