logging in or signing up Acceleration bsndev Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 176 Category: Education License: All Rights Reserved Like it (2) Dislike it (0) Added: August 07, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Objectives : Objectives Describe the relationship between velocity and acceleration Define acceleration and deceleration Calculate acceleration Scientists have a special way to measure a change in velocity: : Scientists have a special way to measure a change in velocity: Acceleration Acceleration is a change in velocity over time. Slide 3: If you’re speeding up, you have positive acceleration. If you’re slowing down, you have negative acceleration. The Way Acceleration Works: final velocity – initial velocity time : final velocity – initial velocity time Acceleration Formula A = Vf – Vi T : A = Vf – Vi T Acceleration equation A = V T : A = V T is pronounced delta Acceleration units : Acceleration units km/hr/s kilometers per hour per second km/hr/hr or km/hr2 kilometers per hour per hour m/s/s or m/s2 meters per second per second Example problem : Example problem A roller coaster’s speed at the top of a hill is 10 m/s. Two seconds later, it reaches the bottom of the hill with a speed of 26 m/s. What is the acceleration of the roller coaster? Vi T Vf A = V T : A = V T Final velocity = 26 m/s Initial velocity = 10 m/s Time = 2 s A = 26 m/s – 10 m/s 2s = 16 m/s 2s = 8 m/s/s 8 m/s2 Example Problem : Example Problem At the end of a race, a bicycle is decelerated from a velocity of 12 m/s to a rest position in 30 seconds. What is the deceleration of this bicycle? Vi T Vf = 0 m/s A = V T : A = V T Final velocity = 0 m/s Initial velocity = 12 m/s Time = 30 s A = 0 m/s – 12 m/s 30s = -12 m/s 30s = -0.4 m/s/s = -0.4 m/s2 You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Acceleration bsndev Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 176 Category: Education License: All Rights Reserved Like it (2) Dislike it (0) Added: August 07, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Objectives : Objectives Describe the relationship between velocity and acceleration Define acceleration and deceleration Calculate acceleration Scientists have a special way to measure a change in velocity: : Scientists have a special way to measure a change in velocity: Acceleration Acceleration is a change in velocity over time. Slide 3: If you’re speeding up, you have positive acceleration. If you’re slowing down, you have negative acceleration. The Way Acceleration Works: final velocity – initial velocity time : final velocity – initial velocity time Acceleration Formula A = Vf – Vi T : A = Vf – Vi T Acceleration equation A = V T : A = V T is pronounced delta Acceleration units : Acceleration units km/hr/s kilometers per hour per second km/hr/hr or km/hr2 kilometers per hour per hour m/s/s or m/s2 meters per second per second Example problem : Example problem A roller coaster’s speed at the top of a hill is 10 m/s. Two seconds later, it reaches the bottom of the hill with a speed of 26 m/s. What is the acceleration of the roller coaster? Vi T Vf A = V T : A = V T Final velocity = 26 m/s Initial velocity = 10 m/s Time = 2 s A = 26 m/s – 10 m/s 2s = 16 m/s 2s = 8 m/s/s 8 m/s2 Example Problem : Example Problem At the end of a race, a bicycle is decelerated from a velocity of 12 m/s to a rest position in 30 seconds. What is the deceleration of this bicycle? Vi T Vf = 0 m/s A = V T : A = V T Final velocity = 0 m/s Initial velocity = 12 m/s Time = 30 s A = 0 m/s – 12 m/s 30s = -12 m/s 30s = -0.4 m/s/s = -0.4 m/s2