Adrawing shows a triple jump on a checkerboard starting at the center of square a and ending at the center of square
b. each side of the square measures 5.0cm. what is the magnitude and displacement of the colored checker during the triple jump

Each jump covers one center of the square to the other. If you can imagine the scenario, a single jump would cover a length of the side of one whole square. So, if it took three jumps, the total distance would be

d = 3 * 5 cm
d = 15 cm

Therefore, the magnitude or distance is 15 cm. The displacement depends on the direction of motion. 

Pe = 1/2k(x)^2  and .05n/m = .05x10^-9m = x