Riley is doing an experiment working with friction. he wants to find two ways to modify an object that could increase or decrease the same type of friction. which methods could he use to perform his experiment?
1.increasing roughness and speed
2.increasing surface area and aerodynamic design
3.using nonstick materials and ball bearings
4.using lubricants and increasing surface area
Answers: 1
Physics, 24.09.2019 23:30, ghwolf4p0m7x0
Answers: 2
Biology, 28.10.2019 04:31, leannaadrian
Answers: 2
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