A particle is moving across a perfectly smooth horizontal surface at a constant velocity. It is acted upon by exactly two constant horizontal forces.
The first force is F1=(250i−120j) N\mathbf{F}_1 = (250\mathbf{i} - 120\mathbf{j})\text{ N}F1=(250i−120j) N.
The second force is F2=(ki+120j) N\mathbf{F}_2 = (k\mathbf{i} + 120\mathbf{j})\text{ N}F2=(ki+120j) N.
Find the value of kkk.
Select your answer from the following:
−250-250−250
−130-130−130
130130130
250250250