Warm Up 1) - Grade 11 Physicswattgr11physics.weebly.com/uploads/8/8/6/0/8860033/sept...Warm Up 1) 2)...
Transcript of Warm Up 1) - Grade 11 Physicswattgr11physics.weebly.com/uploads/8/8/6/0/8860033/sept...Warm Up 1) 2)...
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Warm Up 1)
2)
3)
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Acceleration
checkout www. physicsclassroom.com
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Distance - a scalar quantity. - "how much ground an object has covered" during its motion. - additive total of all the displacements
Displacement - a vector quantity. -"how far out of place an object is" - the object's overall change in position.
6 m
6 m
3 m3 m
![Page 4: Warm Up 1) - Grade 11 Physicswattgr11physics.weebly.com/uploads/8/8/6/0/8860033/sept...Warm Up 1) 2) 3) Acceleration checkout www. physicsclassroom.com Distance - a scalar quantity.](https://reader034.fdocuments.in/reader034/viewer/2022050118/5f4f00006d119b7ae04ed27b/html5/thumbnails/4.jpg)
Speed -is a scalar quantity. - refers to "how fast an object is moving." -speed is the rate at which an object covers distance.
Velocity -is a vector quantity. - refers to "the rate at which an object changes its position."
Average Speed Distance TraveledTime of Travel
=
Average Velocity Δ positiontime
= = displacementtime
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http://phet.colorado.edu/en/simulation/moving-man
![Page 6: Warm Up 1) - Grade 11 Physicswattgr11physics.weebly.com/uploads/8/8/6/0/8860033/sept...Warm Up 1) 2) 3) Acceleration checkout www. physicsclassroom.com Distance - a scalar quantity.](https://reader034.fdocuments.in/reader034/viewer/2022050118/5f4f00006d119b7ae04ed27b/html5/thumbnails/6.jpg)
Acceleration - is a vector quantity-that is defined as the rate at which an object changes its velocity-an object is accelerating if it is changing its velocity.
Note: acceleration is not moving fast, andif the velocity isn't changing then the acceleration equals zero.
-Velocity is increasing or decreasing (Deceleration)
- same speed different direction?
Circular motion
or
![Page 7: Warm Up 1) - Grade 11 Physicswattgr11physics.weebly.com/uploads/8/8/6/0/8860033/sept...Warm Up 1) 2) 3) Acceleration checkout www. physicsclassroom.com Distance - a scalar quantity.](https://reader034.fdocuments.in/reader034/viewer/2022050118/5f4f00006d119b7ae04ed27b/html5/thumbnails/7.jpg)
Time IntervalAve. Velocity During Time Interval
Distance Traveled During Time Interval
Total Distance Traveled from 0s to End of Time Interval
0 - 1 s ~ 5 m/s ~ 5 m ~ 5 m
1 -2 s ~ 15 m/s ~ 15 m ~ 20 m
2 - 3 s ~ 25 m/s ~ 25 m ~ 45 m
3 - 4 s ~ 35 m/s ~ 35 m ~ 80 m
Determine the Average acceleration based on the following data.
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Average Acceleration Δ velocitytime
= = vf - vi
time
Units: (m/s)/s (km/hr)/s(mi/hr)/s
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Determining Average Acceleration From a (v vs t) Graph
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Direction of Acceleration
Depends on:
-is the object slowing down or speeding up,-is the object going left or right (+ve or -ve)
Rule of Thumb
If the object is slowing down then the acceleration is opposite to the direction of the velocity.
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![Page 13: Warm Up 1) - Grade 11 Physicswattgr11physics.weebly.com/uploads/8/8/6/0/8860033/sept...Warm Up 1) 2) 3) Acceleration checkout www. physicsclassroom.com Distance - a scalar quantity.](https://reader034.fdocuments.in/reader034/viewer/2022050118/5f4f00006d119b7ae04ed27b/html5/thumbnails/13.jpg)
![Page 14: Warm Up 1) - Grade 11 Physicswattgr11physics.weebly.com/uploads/8/8/6/0/8860033/sept...Warm Up 1) 2) 3) Acceleration checkout www. physicsclassroom.com Distance - a scalar quantity.](https://reader034.fdocuments.in/reader034/viewer/2022050118/5f4f00006d119b7ae04ed27b/html5/thumbnails/14.jpg)
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Compare the Velocities and Accelerations from the Graphs (v vs t)
Page 41
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Is this train accelerating?
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Special Case: Acceleration as a result of changing directions.
An object can move with constant speed and still be accelerating.
An object moving on a curve (and therefore changing direction) is accelerating.
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Pages 33-41 in blue workbook
Pages 7 - 10 in yellow workbook