The position vector of a particle moving in the x-y plane at time t=3 sec is r(t=3)=2i-3j m. at time t=5 sec, its position vector has become r(t=5)=4i-4j m.
a- Plot the position vectors at t=3 sec and t=5 sec in the x-y plane.
b- find the displasment vector (delta r)=(r,t=5)-(r,t=3).
c-determine the magnitude of its average velocity, (delta r/delta t), during this interval and the angle made by the average velocity with the x-axis.