PLEASEE HELP

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

If the new moon happens on january 15th, what shape will it be on february 6th?

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)