Two cars A and B are moving in opposite directions with the speed of 10 m/s and 20 m/s respectively. Find (i) VAB(ii) VBA And also draw the diagram to represent the motion of the car.​

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.