How does kinetic engery affect the stopping distance of a small vehicle compared to a larger vehicle?

Which of the following always exist between two objects having mass ● elastic force ● contact force ●gravitational force ●magnetic force

To safely control the traffic flow and protect workers near public roadways and moving construction equipment use you could use

Dna is a polymer of which consist of a sugar, a phosphate group, and a a. amino acids; nucleotide b. nucleic acids; nucleotide c. nucleotides; nitrogenous base d. nucleotides; nucleic acid e. proteins; nucleotide