Acannon, elevated at 40 is fired at a wall 300 m away on level ground, as shown in the figure below. the initial speed of the cannonball is 89

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.