The coefficient of static friction is 0.768 between the soles of a 60.0 kg sprinter's running shoes and the level track surface on which she is running. Determine the maximum acceleration she can achieve.

During cooling, the kinetic energy of the molecules falls. why does this happen? a. the motion of the molecules increases. b. the motion of the molecules slows down. c. the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.