Science (law of inertia)

• When a car exhilarates abruptly

  Your body is pulled to the back
• When the driver suddenly steps on the brakes

  You feel the seat belt tighten
• Newton's first law of motion


  The law of inertia, it explains how an object responds to changes in motion
• Force


  Any push or pull that causes changes in the motion of an object
• Types of force

  • Contact force
  • Non-contact force
• Contact force


  Present when two or more surfaces or media touch and interact
• Friction


  A specific type of contact force, the object's resistance to motion
• Non-contact force


  Constantly present in nature and does not need human intervention to arise
• When your feet leave the earth

  There is a gravitational pull between you and the earth
• Motion


  Caused by unbalanced forces and can be described with speed, velocity and acceleration
• Speed


  The length of distance traveled in a certain amount of time
• Velocity


  The rate of change of displacement of an object
• Acceleration


  The rate of change of velocity of an object
• Object at rest


  Will remain at rest unless acted on by an unbalanced force
• Object in motion


  Continues to move with the same velocity unless acted on by an imbalanced force
• Inertia


  The property that resists the changes in an object, it is independent from external force and mass dependent
• When you slowly pull the cardboard, the coin remains at rest
• When you quickly flick the cardboard, the coin moves with the cardboard</b>