Answer:
Newton's second law.
Step-by-step explanation:
Newton's second law is an equation that relates the acceleration to the total force exerted on an object, it tells us that when a force F acts on an object that has a mass m, the force will cause an acceleration a that goes in the same direction as the force. Therefore if the force increases, so will the acceleration.
This is reflected in the equation:
F = ma
Where F and a are vector quantities, that is, they have magnitude and direction.
One way to interpret this law is that objects with more mass will be more difficult to accelerate (greater force will be needed) than objects with less mass.