Newtons First Law

• What is Newton's First Law of Motion?

  An object remains at rest or in motion
• What happens if the resultant force acting on an object is zero?

  The object remains stationary or continues moving
• What does it mean for an object to be stationary?

  The object does not change its position
• What occurs when the resultant force on a moving object is zero?

  The object continues to move at the same speed
• What is the term for the tendency of objects to continue in their state of rest or motion?

  Inertia
• How is inertia defined in physics?

  Inertia is the resistance to change in motion
• What does inertial mass measure?

  How difficult it is to change an object's velocity
• What is the relationship between force and acceleration?

  Force equals mass times acceleration
• How is inertial mass defined mathematically?

  As the ratio of force to acceleration
• What are the implications of Newton's First Law of Motion?

  • Objects at rest stay at rest
  • Objects in motion stay in motion
  • Changes occur only with a resultant force
• How does inertia affect an object's motion?

  • Resists changes in velocity
  • Affects acceleration when forces are applied
  • Determines how easily motion can change