Potential difference definition

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?