Loading in 5 sec....

Physics 4-1 Changes in Motion Physics 4-2 to 4-4 Newton's LawsPowerPoint Presentation

Physics 4-1 Changes in Motion Physics 4-2 to 4-4 Newton's Laws

- By
**kaleb** - Follow User

- 140 Views
- Uploaded on

Download Presentation
## PowerPoint Slideshow about ' Physics 4-1 Changes in Motion Physics 4-2 to 4-4 Newton's Laws' - kaleb

**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

### Physics 4-1 Changes in MotionPhysics 4-2 to 4-4 Newton's Laws

Compiled by Jack Graham 2013

Physics 4-1 Changes in MotionForce is a vectorFree Body Diagrams (figure 4-4 a-f)

Physics 4-2 Newton's First lawInertia An object at rest remains at rest. An object in motion continues in motion with constant velocity (constant straight line speed) unless the object experiences a net external force. IFF the net external force = 0 then its acceleration = 0.net external force vector sum of all forces acting on an object.

Physics 4-2 Newton's First lawMass measure of inertiaEquilibrium net external forces = 0

Physics 4-3 Newton's 2nd and 3rd Laws2nd Law Force is proportional to mass and acceleration F = ma3rd Law Forces always exist in pairs such that they are oppositely directed and equal in magnitude.These pairs are called “action-reaction pairs”.Action-reaction pairs are simultaneous.Each half of the action-reaction pair act on different objects.Field forces also exist in pairs.For A-R pairs ma = - MA

Everyday ForcesWeight: Me versus The Earth“Normal Force” = “N” Compression Resistance of molecular substancesat right angles to surface of objects in contact with each otherFriction Force proportional to “N”Static Friction standing still Fs = - F appliedKinetic Friction Fk = - µF applied so net Fn= F-Fkµs = Coefficient of Static Friction Fs,max/Fnµk = Coefficient of Kinetic Friction Fk/FnsoFf = - µFn

Assignment: All Section Reviews (Do right after you read them, please)Assignment after all reading: Read CBL Sensors ExperimentDo Problems: ALL Conceptual Questions, plus # 11, 13, 15, 21, 29, 39, 43

Download Presentation

Connecting to Server..