Alan and Barry are at Six Flags riding the bumper cars, as shown in the diagram. (a) At the instant shown, Alan begins to accelerate at 1.25 m/s2 to a speed of 4.0 m/s and then continues at constant v

Alan and Barry are at Six Flags riding the bumper cars, as shown in the diagram.

(a) At the instant shown, Alan begins to accelerate at 1.25 m/s2 to a speed of 4.0 m/s and then continues at constant velocity until he hits Barry. Calculate the total time it takes for Alan to travel the distance indicated. (4 points)

(b) After the collision, Barry moves to the right at a speed of 3.5 m/s.

i.  Calculate the speed of Alan after the collision. (2 points)

ii.  Indicate the direction of motion of Alan after the collision. (1 point)

____ To the left _______ To the right _____ None; Alan is at rest.

(c) Is this an elastic collision?

____ Yes _______ No

Justify your answer. (3 points)