the question asks, " a car moving 35 m/s on dry pavement skids to a stop over 175 m. what is the coefficient of friction between the car's tires and the pavement?
the answer simply says that kinetic energy is dissipated by friction, umgd=fd=.5mv^2
but doesn't setting friction equal to fd ignore the internal energy change that is part of the work done to stop the car? ie W=dKE + dEi
thanks, hope this helps people with similar problems.
chad
the answer simply says that kinetic energy is dissipated by friction, umgd=fd=.5mv^2
but doesn't setting friction equal to fd ignore the internal energy change that is part of the work done to stop the car? ie W=dKE + dEi
thanks, hope this helps people with similar problems.
chad