A web page designer creates an animation in which a dot on a computer screen has a position R=[4.0cm + (2.4cm/s^2)t^2(i)] + (5.5cm/s)t(j)
a) Find the average velocity of the dot between t=0 and t=2.
b) Find the instantaneous velocity at t=0 s.
c) Find the instantaneous velocity at t=1.0 s.
d) Find the instantaneous velocity at t=2.0 s.