Newton's second law

• what is Newton's second law?

  the acceleration of an object is proportional to the resultant force acting on the object, and inversely proportional to the mass of the object
• what is Newton's second law as an equation?

  resultant force = mass x acceleration
• what is inertial mass?

  • a measure of how difficult it is to change the velocity of an object
  • ratio of force over acceleration