write an expression for average velocity in terms of its rectangular components.hence write an expression for instantaneous velocity.find the direction of instantaneous velocity Share with your friends Share 7 Ved Prakash Lakhera answered this Average velocity v in terms of rectangular componantsis given by,v = vx i→ + vy j→.Instantaneous velocity is defined as the velocity attained by a body in motion at an instant. It is found by drawing tangent at that particular time on the graph shown by velocity ntime graph, as shown in the v-t graph. 2 View Full Answer