12-16. A particle travels along a straight line such that

Chapter 12, Problem 12-16

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QUESTION:

A particle travels along a straight line such that in 2 s it moves from an initial position \(s_{A}=+0.5 \mathrm{\ m}\) to a position \(s_{B}=-1.5 \mathrm{\ m}\). Then in another 4 s it moves from \(s_{B}\) to \(s_C=+2.5\mathrm{\ m}\). Determine the particle's average velocity and average speed during the 6-s time interval.

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QUESTION:

A particle travels along a straight line such that in 2 s it moves from an initial position \(s_{A}=+0.5 \mathrm{\ m}\) to a position \(s_{B}=-1.5 \mathrm{\ m}\). Then in another 4 s it moves from \(s_{B}\) to \(s_C=+2.5\mathrm{\ m}\). Determine the particle's average velocity and average speed during the 6-s time interval.

ANSWER:

Step 1 of 4

At  the particle moves from  to  while at  the particle moves from  to . Solving for the total displacement, , of the particle,

Calculating for the total time,  of the particle,

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