Laws of motion

• the law of inertia states that every object continues to remain at rest or in uniform motion unless an unbalance force acts on it and changes it state.
• formula for acceleration = f/m
• the law of acceleration states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass
• As force is constant, and there is an increase in mass will produce a corresponding decrease in acceleration
• Dyne is a smaller unit used to express force
• Inertia is the tendency of an object to resist any change in its state of motion.
• What is considered the measure of inertia (mass)
• Mass is the amount of matter found in an object. Mass can also be defined as a measure of an object's resistance to change in its state of motion.
• Weight is the gravitational force an object experiences.
• acceleration due to gravity equals to 9.8 m/s2
• formula for force = ma
• w = mg

  m= mass of the object

  g = acceleration due to gravity
• the law of interaction states that for every action, there is an equal but apposite reaction
• force = w

  w= weight of the object or gravitational force on the object
• f1 = -f2, what does this imply?


  these forces are acting on two different bodies, so therefore they do not cancel each other out
• net force is the vector or the sum of all the forces acting on the object