A runner increases her velocity from 1.0 m/s to 5.0 m/s in 3.0 seconds. What is the runner’s acceleration?

Must be negative.substance increases

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

Ibelieve it's temperature! i'm not 100% sure.

Answer(false);