newton s 3 rd law
Download
Skip this Video
Download Presentation
Newton’s 3 rd Law

Loading in 2 Seconds...

play fullscreen
1 / 5

Newton’s 3 rd Law - PowerPoint PPT Presentation


  • 99 Views
  • Uploaded on

Newton’s 3 rd Law . Physical Science Section 3.3. Newton’s third law of motion when 1 object exerts a force on a 2nd object, the 2nd object exerts a force that is equal in size and opposite in direction to the force from the 1st object For every action, there is an equal & opposite reaction

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Newton’s 3 rd Law ' - leila-quinn


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
newton s 3 rd law

Newton’s 3rd Law

Physical Science Section 3.3

slide2
Newton’s third law of motion
    • when 1 object exerts a force on a 2nd object, the 2nd object exerts a force that is equal in size and opposite in direction to the force from the 1st object
    • For every action, there is an equal & opposite reaction
  • Swimming- swimmer exerts force on water; water exerts force on swimmer
    • Action-reaction pairs act on different object
  • Rocket engine- rocket engine exerts force on the hot gases produced by the fuel
    • gases exert a force on the rocket and push it forward
newton s 3 rd law1
Newton’s 3rd Law
  • Orbit of earth in space influenced by:
    • gravitational forces between the Sun and the Earth and between other planets and the Earth
  • Discovery of Neptune
    • Orbit of Uranus could not be explained by the planets known at the time
  • Bicycle’s easier to stop than a car- less mass
    • Less mass = less inertia and less momentum
slide4
Object with less speed = less momentum
    • Less speed = easier to stop
  • Momentum- product of mass and velocity- influences how easily an object can be stopped
    • P = m x v
    • P : momentum Units kg*m/s2
    • Has direction because velocity has direction
    • Indicate direction of momentum
  • Force can be calculated by using the final and initial momentum when an object changes its velocity.
    • F = (mvf – mvi)/t)
slide5
Law of conservation of momentum- total momentum does not change in a collision
    • Momentum before collision = momentum after collision
  • 2 objects collide when moving in the same direction
    • first object slows and the second speeds up in the same direction
  • 2 objects collide when moving in opposite directions with the same momentum
    • Start with 0 momentum, collide, bounce off in opposite directions, still have 0 momentum
ad