For an object that is speeding up at a constant rate, how would the acceleration vs. time graph look?

Does the energy in a solid increase or decrease when changing to a liquid?

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

Why is the melting of ice a physical change ?