A 4,000-kg pick-up truck travelling at 40 m/s collides with a parked car. After the collision, if the pick-up truck continues moving at 15 m/s and the car moves at 50 m/s, determine the mass of the car.

Which of the following statements are true for an isothermal process? check all that apply. - during an isothermal process, the work done by the gas equals the heat added to the gas. - during an isothermal process, the internal energy of the system changes. - an isothermal process is carried out at constant temperature. - an isothermal process is carried out at constant pressure. - an isothermal process is carried out at constant volume.