Law #2: Acceleration depends on the mass of an object and the force pushing or pulling the object.
Force = mass x acceleration, F=mXa
Acceleration = force/mass, a=F/m
It takes less force to accelerate something with a small mass. This is why large trucks need more powerful motors to get them going from a complete stop. If you want to go faster, you have to use more force. Like having to pedal harder on a bike.