A car traveling at 40 m/s accelerates to 57 m/s in 2.5 seconds. What is the acceleration of the car?

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.