An ions position vector is initially 2.0k 6.0j r , and 10 s later it is 2.0i 8.0j 2.0k
Chapter 4, Problem 7(choose chapter or problem)
An ion’s position vector is initially \(\vec{r}=5.0 \hat{\mathrm{i}}-6.0 \hat{\mathrm{j}}+2.0 \hat{\mathrm{k}}\), and 10 s later it is \(\vec{r}=-2.0 \hat{\mathrm{i}}+8.0 \hat{\mathrm{j}}-2.0 \hat{\mathrm{k}}\) , all in meters. In unit-vector notation, what is its \(\vec{v}_{\mathrm{avg}}\) during the 10 s?
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