158 -- A particle moves along the X-axis with constant acceleration. If the velocity of the particle at $t = 0$ is in the positive X-direction, and the average velocity vector during the first 10 seconds of motion is $\vec{v}_{av} = (7.5\,\frac{\text{m}}{\text{s}})\,\hat{i}$ and the average velocity in this interval is $8.5\,\frac{\text{m}}{\text{s}}$, the distance traveled during the first 2 seconds of motion is how many meters? (1) $5$ (2) $15$ (3) $25$ (4) $35$
\textbf{158 --} A particle moves along the X-axis with constant acceleration. If the velocity of the particle at $t = 0$ is in the positive X-direction, and the average velocity vector during the first 10 seconds of motion is $\vec{v}_{av} = (7.5\,\frac{\text{m}}{\text{s}})\,\hat{i}$ and the average velocity in this interval is $8.5\,\frac{\text{m}}{\text{s}}$, the distance traveled during the first 2 seconds of motion is how many meters?
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(1) $5$ \hspace{1.5cm} (2) $15$ \hspace{1.5cm} (3) $25$ \hspace{1.5cm} (4) $35$
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