1
Q
What is a linear and non-linear relationship
between two quantities?
A
If a graph is plotted and the line of best fit is straight then we say that there is a linear relationship
between the two quantities on the x and y axes. If the line is not straight then it is non-linear.
2
Q
What is meant by a directly proportional
relationship between two quantities?
A
If a graph is plotted and the line of best fit is straight and goes through the origin then there is a directly proportional relationship between the two quantities.
3
Q
What is spring constant?
A
The spring constant is the amount of force needed to stretch (or compress) a material by 1 m. Its unit is N/m.
4
Q
A
