newton's laws

• What is Newton's first law of motion?


  An object will remain at rest or move at a constant velocity unless acted upon by an external force.
• What must occur for an object to start moving or change its speed?

  A resultant force must be acting on the object.
• What happens to an object if no resultant force is acting on it?


  The object will not continue to move at the same velocity.
• What is Newton's second law of motion?


  The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
• What is the formula for resultant force according to Newton's second law?


  $F =$$ma$
• How does doubling the force affect acceleration?


  Twice as much force produces twice as much acceleration.
• What is the relationship between force and acceleration as stated in Newton's second law?


  Acceleration is directly proportional to force.
• What is Newton's third law of motion?


  For every action, there is an equal and opposite reaction.
• What does Newton's third law imply about the forces involved?


  The two forces act on different objects.
• What are the key concepts of Newton's laws of motion?


  • First Law: An object remains at rest or in uniform motion unless acted upon by a force.
  • Second Law: Acceleration is proportional to net force and inversely proportional to mass (F = ma).
  • Third Law: For every action, there is an equal and opposite reaction.