Question

a body of mass 2kg at position(2,3) moves with respect to origin at velocity 2i+3j.find the L.

Answer 1

W=F⃗ ⋅s⃗ W=F→⋅s→

Therefore,

W = (2i+3j+k).(1i+2j–4k)

W = 2.1+3.2+1(-4) = 2+6–4

W = 4 units or joules