Three displacements are a=200 m due south, b=250 m due west, and c= 150 m at 30.0° east of north. (a) construct a separate diagram for each of the following possible ways of adding these vectors: r1 = a+b+c ; r2 = b+c+a ; r3 = c+b+a. (b) explain what you can conclude from comparing the diagrams.

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.