resultant force

• what is an unbalanced force


  an unbalanced force causes the speed or direction of the object to change and this is said in Newton's second law
• what is a resultant force


  a resultant force is the sum of all the forces acting on the object
• what happens if all the forces on the object are balanced 


  there would be zero resultant force
• what is force measure in

  newtons (n)
• how do we find resultant forces


  we add all the forces together
• what is a vector


  the quantity that has both size and direction and this is what forces are so the direction will change the sign
• how do we determine the sign of the vector

  if the vector is pointing left, it is negative but if the vector is pointing right, it is positive

  
  

  similarly, if the vector is pointing up, it is positive but if the vector is pointing down, it is negative