Look at the picture to the right. The truck
is out of gas. The truck has a mass of 1500 kg and
is loaded with 1000 kg of furniture. The man must
apply 82 N of force for 60 seconds to bring the
truck from rest to a velocity of 2.0 m/s. If the man
had first unloaded half of the furniture (500 kg),
only 66 N of force for 60 seconds would be needed
to reach the same velocity. If he had unloaded all
of the furniture, only 50 N of force for 60 seconds
would be needed to reach the same velocity.
Calculate the acceleration of the loaded truck, half-loaded truck, and empty truck.