1 / 7

Chapter 9 Section 3

Chapter 9 Section 3. Acceleration. Changing Velocity. A change in velocity can involve a change in either speed or direction-or both. An object is accelerating when the object increases speed, decreases speed or changes direction. Calculating Acceleration.

billyl
Download Presentation

Chapter 9 Section 3

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. Chapter 9 Section 3 Acceleration

  2. Changing Velocity • A change in velocity can involve a change in either speed or direction-or both. • An object is accelerating when the object increases speed, decreases speed or changes direction.

  3. Calculating Acceleration • Acceleration describes the rate at which velocity changes. • To determine the acceleration of an object you must calculate its change in velocity per unit of time. • Acceleration=Final Velocity-Initial Velocity time

  4. SI unit for Acceleration is m/s/s=m/s2, if velocity is in m/s and time is in seconds. It will be Km/h/h=km/h2 if the velocity is in Km/h and the time is in hours. • Problem solving with acceleration pg 353 MATH PRACTICE • #s 1 and 2

  5. Acceleration Problems • 1. At point A, a runner is jogging at 3m/s. Forty seconds later, at point B, on a hill, the jogger’s velocity is only 1m/s. What is the jogger’s acceleration from point A to point B? • 2. In a summer storm, the wind is blowing with a velocity of 8m/s north. Suddenly, in 3 seconds, the wind’s velocity is 23 m/s north. What is the acceleration in the wind?

  6. Homework Page 355 # • 1 a, b, c • 2 a, b • 3 a, b, c

  7. Graphing Acceleration • Check pages 354 and 355 • You can use both a speed-versus-time graph and a distance-versus-time graph to analyze the motion of an accelerating object. • Acceleration could be negative if the initial velocity is larger than final velocity in that case it is called deceleration.

More Related