Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Section 10-4
Document related concepts
Photon polarization wikipedia , lookup
Coriolis force wikipedia , lookup
Angular momentum operator wikipedia , lookup
Fictitious force wikipedia , lookup
Electromagnetism wikipedia , lookup
Equations of motion wikipedia , lookup
Rigid body dynamics wikipedia , lookup
Newton's theorem of revolving orbits wikipedia , lookup
Classical mechanics wikipedia , lookup
Centrifugal force wikipedia , lookup
Relativistic mechanics wikipedia , lookup
Mass versus weight wikipedia , lookup
Relativistic angular momentum wikipedia , lookup
Centripetal force wikipedia , lookup
Transcript
Section 10-4 Newton’s Third Law Newton’s Third Law • When an object exerts a force on another object the second object exerts a force of equal strength in the opposite direction – For every action there is an equal an opposite reaction Action – Reaction Pairs • Baseball – Ball hits the bat = action force – Bat pushes back on ball = reaction force – The bat makes the ball fly • They don’t cancel each other out because each force is exerted on different objects • Two People Opening a Door – One person pushes to the right – action force – Another pushes door to left – action force – Door pushes back in each direction equally • The door doesn’t move because all forces cancel out Momentum • Called the “quantity of motion” – Depends on the objects velocity and mass – Momentum = mass x velocity • Conservation of Momentum – The momentum of any group of objects remains the same unless outside forces act on it. Conservation of Momentum Example
