. A sofa is pushed with a force of 450 N in the direction of the displacement of the sofa. If it is pushed 12 m, how much work is done on the sofa?

3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?