If the mass of an object increases, predict what will happen to the coefficient of sliding friction. a. the coefficient of sliding friction will increase. b. the coefficient of sliding friction will decrease. c. the coefficient of sliding friction will stay the same. d. the coefficient of sliding friction will decrease by half

Which effect did the united states supreme court's decision in plessy v. ferguson have? 1. ending segregation in all public schools in america 2. protecting voting rights for african americans by eliminating literacy tests 3. upholding the rights of all citizens to be treated equally by the government 4. authorizing the system that kept black and white people separated