Newton's Laws of motion

Anotações:

• Be careful when applying Newton's laws, always check if the forces are the same type and what body they are acting on as it will determine whether to use the 1st or 3rd law in your answer!

1. 1) Every object persists in a state of rest or uniform motion unless compelled to change that state by forces acting on it

   Anexos:

   • note for Newton
   1. EXAMPLE: an object on a table won't go anywhere as the forces on it are balanced reaction(R)(force of table pushing object up)=weight(mg) (force of gravity pulling oblect down
2. 2) Acceleration is proporional to force
   1. Resultant force(N)= mass(kg)xacceleration(m/s2)
      1. F=mxa
      2. more force= more acceleration ( for a certain mass)
      3. more mass = less acceleration (for a given force)
3. 3) For every action there is an equal and opposite reaction
   1. REMEMBER: forces are the same size and the same type!
      1. Forces act on different bodies and act in the opposite direction