NEWD newtons laws of linear motion + measurements

• law of inertia

  an object will continue in a state of constant velocity unless compelled to change by an external force
• law of acceleration

  an object will accelerate proportional to the force acting and in the direction of that force
• law of reaction

  for every action there is an equal and opposite reaction
• ground reaction force is the equal and opposite force exerted on a performer who applies muscular force on the ground
• speed.

  • rate of change of position
  • m/s = distance / time
• distance.

  • length of the path a body follows when moving from one position to another
  • distance (m) - speed X time