Which statement gives the definition of force?
- AWhen a force acts on a body that is free to move, the force is the product of the mass of the body and its acceleration.
- BWhen a force acts on a body that is free to move, the force is the rate of change of momentum of the body.
- CWhen a force acts on a body that is free to move, the force is the work done by the force divided by the distance moved by the body.
- DWhen a force acts on a lever and causes a moment, the force is the moment divided by the perpendicular distance of the force from the pivot.