# Units in linear graph, Quick Q help asapWatch

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Thread starter 3 years ago
#1
the unit on y axis is ms^-2, metres per second squared

the unit on x axis is m^2, metres squared

The unit of the gradient will be ???

ms^-2, metres per second squared
or
ms, metres per second
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3 years ago
#2
If I'm not wrong, the value of a gradient won't have units.
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Thread starter 3 years ago
#3
Are you sure i thought it had to have some form of unit as both the y and x axis do
I thought the unit of the gradient had to be, delta of the unit of the y axis per delta of the unit of the x axis
for example a velocity over time graph
v=ms^-1
t=s
Therefore unit of gradient is ms^-1 per s = ms^-2

So for my graph im getting confused, as i think the unit of the gradient should be
ms^-2 per m^2 = ?????
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3 years ago
#4
(Original post by pleasehelp1)
Are you sure i thought it had to have some form of unit as both the y and x axis do
I thought the unit of the gradient had to be, delta of the unit of the y axis per delta of the unit of the x axis
for example a velocity over time graph
v=ms^-1
t=s
Therefore unit of gradient is ms^-1 per s = ms^-2

So for my graph im getting confused, as i think the unit of the gradient should be
ms^-2 per m^2 = ?????
Yes, you do need to quote the units as SI base.

Gradient = y/x

using y = ms-2 and x = m2

converting to SI base to avoid any confusion:

This looks very much like the SI base units for pressure N/m2 with mass omitted.

i.e. pressure = F/A =
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Thread starter 3 years ago
#5
thanks for the help
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