In a school playground, a child runs 5.0 m in the x-direction and then 2.0 m in the -y-direction. What is the magnitude of the child's resultant displacement? *
3 m
.82 m
4.6 m
5.4 m

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

it has to be b, about 97 percent.

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over