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Problem 70 Medium Difficulty

Find the work done in moving a particle from $P$ to $Q$ when the magnitude and direction of the force are given by $\mathbf{v}.$
$$P=(1,3), \quad Q=(-3,5), \quad \mathbf{v}=-2 \mathbf{i}+3 \mathbf{j}$$

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Video Transcript

in this question, the forces given to assess B is equal to minus two way plus treaty Initial point PS one coma tree and final point us minus tree comma five. So the vector frumpy took you will be Victor beat you. It will be given by minus T minus one. I plus minus five minus tree J, which is minus four. I minus eight j now the world dinos force dot Did the distance the displacement we just pick you so we don't pick you will be minus two y plus three j dot minus four I minus eight j which would be minus two in tow minus four bless gee and to minus eight. So this is it minus chain took eight, which is minus 16. So therefore worked on this minus 16 units.

Top Algebra 2 Educators
GH
Grace H.

Numerade Educator

AH
Ahyeon H.

University of California, Berkeley

Martha R.

Michigan State University

Monique R.

Numerade Educator