Asked by Trevor

How much work is done by the force F⃗ =(− 3.0 i^− 7.6 j^)N on a particle that moves through displacement Δr⃗ = 3.6 i^−2.0j^m?
Answered by Damon
Fx dx + Fy dy

(-3 * 3.6) - (7.6 * -2)

4.4

Answered by MathMate
F=<-3,-7.6>
Δr = <3.6,-2>

Work done
F.Δr
= <-3,-7.6><3.6,-2>
= 4.4 J
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