Motion laws of newton 1
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Motion laws of newton 1

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Motion laws of newton 1 Motion laws of newton 1 Presentation Transcript

  • First Motion Law of Newton
  • Newton’s First Law An object at rest remains at rest, and an object in motion continues in motion with constant velocity (that is, constant speed in a straight line) unless the object experiences a net external force.
  • Newton’s First Law Inertia is the tendency of an object to resist any change in its state of motion. Newton’s first law is often referred to as the law of inertia because it states that in the absence of a net force, a body will preserve its state of motion. In other words, Newton’s first law says that when the net external force on an object is zero, the object’s acceleration (or the change in the object’s velocity) is zero.
  • Mass is a measure of inertia The inertia of an object is proportional to the object’s mass. The greater the mass of a body, the less the body accelerates under an applied force. Similarly, a light object undergoes a larger acceleration than does a heavy object under the same force. Therefore, mass, which is a measure of the amount of matter in an object, is also a measure of the inertia of an object.