Look at the photo on the right. The truck has run out of gas. The truck has a mass of 1500 kg and It is loaded with 1000 kg of furniture. Man must apply 82 N of force for 60 seconds to truck from rest at a speed of 2.0 m / s. If man had first unloaded half of the furniture (500 kg), only 66 N of force would be needed for 60 seconds to reach the same speed. If he had downloaded everything from furniture, only 50 N of force for 60 seconds it would be necessary to achieve the same speed. Calculate the acceleration of the loaded truck, half loaded truck and empty truck.