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Newton’s Laws of Motion . Notes. Newton’s Law of Universal Gravitation. All objects are attracted to one another. More mass = more gravity Closer objects = more gravity. Inertia. Objects resist changes in motion. Newton’s 1 st Law.

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Presentation Transcript
newton s law of universal gravitation
Newton’s Law of Universal Gravitation
  • All objects are attracted to one another
  • More mass = more gravity
  • Closer objects = more gravity
inertia
Inertia
  • Objects resist changes in motion
newton s 1 st law
Newton’s 1st Law
  • An object at rest will stay at rest unless acted upon by an outside force.
slide5
An object in motion will stay in motion unless acted upon by an outside force such as gravity or friction.
newton s 2 nd law
Newton’s 2nd Law

Force = Mass x Acceleration

vs

The greater the mass of an object the greater the force needed to change its motion.

newton s 2 nd law1
Newton’s 2nd Law

If an object has a greater mass it will take __________ force to accelerate it.

If an object has a less mass it will take __________ force to accelerate it.

newton s 2 nd law2
Newton’s 2nd Law

If an object is pushed or pulled with a large force it will accelerate ________________.

If an object is pushed or pulled with a small force it will accelerate ________________.

newton s 3 rd law
Newton’s 3rd Law

For every action there is an equal and opposite reaction.

why do planets stay in orbit around the sun
Why do planets stay in orbit around the sun?
  • Planets are traveling in a
  • straight line.
  • The strong gravitational pull of the sun pulls the planet towards its center.
  • This makes the planet orbit around the sun.
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