AM-2398

Linear law

A Math · Secondary 4 · Medium · Linear law

A car moves from rest with constant acceleration. Its displacement after

t

seconds is given by

s=\tfrac{1}{2}at^2

. Which straight-line graph should be plotted so that the gradient of the line gives the value of

a

?

Plot $s$ against $t$ ; gradient is $a$ .
Plot $2s$ against $t^2$ ; gradient is $a$ .
Plot $\dfrac{s}{t}$ against $t$ ; gradient is $a$ .
Plot $\dfrac{s}{t^2}$ against $t$ ; gradient is $\tfrac{a}{2}$ .

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