Practice Questions

(V_y=sqrt{25^2-7^2}=sqrt{576}=24) m.

(R_y=6-10+4=0) N.

(R_x=8-3+5=10) N.

(V=sqrt{8^2+(-6)^2}=10) m.

(F_x=50cos37^circ=50(0.8)=40) N.

(R=sqrt{9^2+12^2}=15) m.

The zero x-component makes the vector vertical. The negative y-component means downward.

Negative x and positive y components place the vector in quadrant II.

Parallel vectors pointing in the same direction can be added directly.

(V_y=Vsin30^circ=10(0.5)=5) N.