A rocket-propelled truck has a mass that is roughly the same as the mass of the fuel stored in its tank. The fuel is set alight, and a constant force drives the truck along horizontal tracks. Air resistance can be ignored. In a test run, the fuel is used up at a steady rate. Which statement describes how the acceleration of the truck changes during the test run?
- AThe acceleration of the truck decreases as the fuel is consumed.
- BThe acceleration of the truck increases as the fuel is consumed.
- CThe acceleration of the truck remains constant.
- DThe acceleration of the truck is zero and the truck moves at a constant velocity.