Which of the following relations representing displacement \( \mathrm{x} \) of a particle descri...
Which of the following relations representing displacement \( \mathrm{x} \) of a particle describes motion with constant acceleration?
(1) \( \mathrm{x}=6-7 \mathrm{t}^{-2} \)
(2) \( \mathrm{x}=3 \mathrm{t}^{2}+5 \mathrm{t}^{3}+7 \)
(3) \( x=9 t^{2}+8 \)
(4) \( x=4 t^{-2}+3 t^{-1} \)
\( \mathrm{P} \)
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