logging in or signing up Acceleration mwarner1968 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: 1240 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: September 03, 2008 This Presentation is Public Favorites: 1 Presentation Description The nsecond presentation on motion for mr. Warner's Physical Science class Comments Posting comment... Premium member Presentation Transcript Acceleration : Acceleration Change in velocity Can be change in speed or direction Acceleration = ∆V/ ∆T ∆V a t Acceleration problem : Acceleration problem A roller coaster’s velocity at the top of a hill is 10m/s. Two seconds later it reaches the bottom of the hill with a velocity of 26m/s. What is the acceleration of the roller coaster? Answer : Answer Acceleration = ∆V/ ∆T a = 26m/s – 10m/s 2 s a = 16m/s 2s a = 8m/s/s or 8m/s2 More acceleration problems : More acceleration problems 1. A car accelerates at a rate of 20mi/hr/s. How long does it take to reach a speed of 80 mi/hr? 2. A car travels at 60 miles per hour around a curve. Is the car accelerating? 3. A car travels in a straight line at 60mi/hr. Is the car accelerating? Answers: : Answers: 1. ∆V 80mi/hr a t 20mi/hr/s t 4sec = t 2. yes! Because it’s changing direction! 3. no! It’s not changing speed or direction! Deceleration : Deceleration Negative acceleration Example: A car slows from 60mi/hr to 20mi/hr in 4 seconds. What is its acceleration? Answer: : Answer: Acceleration = ∆V/ ∆T Acceleration = Vf – Vi t a = 20mi/hr – 60mi/hr 4 s a = -40mi/hr 4s a = -10mi/hr/s Review: Distance-time graph of acceleration : Review: Distance-time graph of acceleration Distance-time graph of deceleration : Distance-time graph of deceleration Review:Speed-time graph of acceleration : Review:Speed-time graph of acceleration Review: Speed-time graph of deceleration : Review: Speed-time graph of deceleration Review: Distance-time graph of constant speed : Review: Distance-time graph of constant speed You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Acceleration mwarner1968 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: 1240 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: September 03, 2008 This Presentation is Public Favorites: 1 Presentation Description The nsecond presentation on motion for mr. Warner's Physical Science class Comments Posting comment... Premium member Presentation Transcript Acceleration : Acceleration Change in velocity Can be change in speed or direction Acceleration = ∆V/ ∆T ∆V a t Acceleration problem : Acceleration problem A roller coaster’s velocity at the top of a hill is 10m/s. Two seconds later it reaches the bottom of the hill with a velocity of 26m/s. What is the acceleration of the roller coaster? Answer : Answer Acceleration = ∆V/ ∆T a = 26m/s – 10m/s 2 s a = 16m/s 2s a = 8m/s/s or 8m/s2 More acceleration problems : More acceleration problems 1. A car accelerates at a rate of 20mi/hr/s. How long does it take to reach a speed of 80 mi/hr? 2. A car travels at 60 miles per hour around a curve. Is the car accelerating? 3. A car travels in a straight line at 60mi/hr. Is the car accelerating? Answers: : Answers: 1. ∆V 80mi/hr a t 20mi/hr/s t 4sec = t 2. yes! Because it’s changing direction! 3. no! It’s not changing speed or direction! Deceleration : Deceleration Negative acceleration Example: A car slows from 60mi/hr to 20mi/hr in 4 seconds. What is its acceleration? Answer: : Answer: Acceleration = ∆V/ ∆T Acceleration = Vf – Vi t a = 20mi/hr – 60mi/hr 4 s a = -40mi/hr 4s a = -10mi/hr/s Review: Distance-time graph of acceleration : Review: Distance-time graph of acceleration Distance-time graph of deceleration : Distance-time graph of deceleration Review:Speed-time graph of acceleration : Review:Speed-time graph of acceleration Review: Speed-time graph of deceleration : Review: Speed-time graph of deceleration Review: Distance-time graph of constant speed : Review: Distance-time graph of constant speed