relbert
Uploaded by
18 SLIDES
314 VUES
180LIKES

MOTION

DESCRIPTION

This comprehensive guide delves into the concept of motion, defined as the change in position of an object in relation to a reference frame. Explore the differences between displacement and distance, and learn about the three primary states of motion: at rest, constant velocity, and acceleration. Get insights into key terms like speed (the rate of distance covered) and velocity (speed in a specific direction), along with their equations and units. The guide also touches on the relative nature of motion and provides useful resources for further exploration.

1 / 18

Télécharger la présentation

MOTION

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MOTION speed, velocity and acceleration

  2. Motion Notes— • What is motion? • Motion is relative • Displacement vs. Distance • Constant vs. Changing Motion • Three possible motions

  3. What is Motion? • Motion occurs when an object changes position • The position of the object depends on your frame of reference. • A frame of reference refers to the stationary background to which the object’s position is compared.

  4. Motion is relative • Motion is relative to a chosen frame of reference. • You at rest at your table…are you moving? • Relative to the floor? • Relative to the school building? • Relative to the ground? • Relative to the Sun? • Relative to the Galaxy? • Relative to the Universe? • http://www.phy.ntnu.edu.tw/java/relativeVelocity/relativeVelocity.html • http://www.classzone.com/books/ml_science_share/vis_sim/mfm05_pg7_relmotion/mfm05_pg7_relmotion.html

  5. Descriptions of Motion • Relative motion—motion of objects as perceived from your frame of reference • Linear motion—motion of objects moving in straight lines (opposite of non-linear) • Constant motion—motion of objects in mechanical equilibrium (no change in motion) • Changing motion—motion of objects that are accelerating

  6. Displacement vs. Distance • Displacement is the distance and direction of an object’s final position from its initial position. • Distance is the length of the path that the object travels.

  7. Three Possible States of Motion • At rest • Constant velocity (same speed and direction) • Acceleration (changing speed and/or direction)

  8. Describing Motion • By definition • By comparison • By measurements • By equations • By graphs

  9. SPEED IS… • HOW FAST AN OBJECT MOVES. • total distance covered divided by time it takes to cover that distance • Speed equation v = d/t • SI unit is meters/second (or m/s) • Example… 40 m/s

  10. VELOCITY IS… • SPEED IN A GIVEN DIRECTION • Speed is determined by the speed equation • Direction of speed is described • SI unit is m/s and direction • example… 40 m/s east

  11. ACCELERATION • The rate of change in velocity over a period of time. • SI unit is m/s2 • example… 4.5 m/s2 or - 4.5 m/s2 • Positive means speeding up, negative means slowing down • Velocity changes in two ways • #1: a change in speed (acceleration or deceleration) • #2: a change in direction (turning)

  12. ACCELERATION EQUATION • Acceleration = final velocity – initial velocity final time – intial time a = vf - vi tf - ti

  13. GRAPHING SPEED • Two types of graphs • Distance-time graphs • Velocity-time graphs

  14. RELATIVE MOTION WEB SITES • http://www.phy.ntnu.edu.tw/java/relativeVelocity/relativeVelocity.html • http://www.physicsclassroom.com/mmedia/kinema/kinemaTOC.html • http://hyperphysics.phy-astr.gsu.edu/hbase/relmot.html • http://www.ii.metu.edu.tr/emkodtu/met106/lectures/motion_in_2_and_3d/page9.html

  15. RELATIVE MOTION • Motion relative to your perspective or frame of reference. •  In order to see an object in motion, you need a perspective or frame of reference, such as a stationary background, for comparison. RELATIVE MOTION

More Related