At the annual turtle races, Poindexter, the record holder, is trying to retain his title. As the race begins, Poindexter starts off racing North with a speed of 0.025 m/s. He retains this speed for 0.5 meters at which time he speeds up to 0.10 m/s. He continues at this rate for 0.75 meters. Tiring, he slows to 0.07 m/s and continues for another half of a meter. Applying all his concentration and effort for the last bit of the race he increases his speed to a swift 0.085 m/s. An exhausted Wood Turtle, Poindexter completes his two meter race beating his closest competitor by a nose.

A.In what amount of time did Poindexter run the race? (Show all your work.)
Time= Distance/Speed,
It was a 2 meter race= 0.5/.025=20, .75/.125=6, .5/.055=9.1, .25/0.085=2.9. 20+6+9.1+2.9=38seconds.

B.What was his average speed? (Show all your work.)
Average speed= total distance/ total time.
2/38=0.053m/s^2 Average Speed.

C.What was his displacement?
I have no idea?! Please help!

To determine Poindexter's displacement, we need to find the difference between his initial position and his final position. Displacement is a vector quantity, meaning it has both magnitude and direction.

In this case, since Poindexter starts racing north and finishes the race at the same position, his displacement will be zero. This is because the change in his position is only in the north direction, and he ends up back at his starting point.

So, the displacement of Poindexter is zero.