How has sir isaac newton contributed to our understanding of forces?

The difference between two numbers is 15. when twice the smaller number is subtracted from three times the larger number, the difference is 58.what is the larger number?

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?