A particle moves on a frictionless surface along a path as shown in Fig. 5.81. (The figure gives a view looking down on the surface.) The particle is initially at rest at point A and then begins to move toward B as it gains speed at a constant rate. From B to C, the particle moves along a circular path at a constant speed. The speed remains constant along the straight-line path from C to D. From D to E, the particle moves along a circular path, but now its speed is decreasing at a constant rate. The speed continues to decrease at a constant rate as the particle moves from E to F; the particle comes to a halt at F. (The time intervals between the marked points are not equal.) At each point marked with a dot, draw arrows to represent the velocity, the acceleration, and the net force acting on the particle. Draw longer or shorter arrows to represent vectors of larger or smaller magnitude.

D. F.