Motion SCIENCE
-
Upload
snju-lehri -
Category
Education
-
view
68 -
download
1
Transcript of Motion SCIENCE
![Page 1: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/1.jpg)
Motion
Speed, Velocity, and Acceleration
![Page 2: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/2.jpg)
Frames of Reference The object or point from which
movement is determined Movement is relative to an object
that appears stationary Earth is the most common frame
of reference
![Page 3: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/3.jpg)
Questions
What is the frame of reference for the sunset?
What is a frame of reference?
What is the most common frame of reference?
![Page 4: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/4.jpg)
Question
When can you determine how fast you are going in a jet plane?
![Page 5: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/5.jpg)
Motion Motion is a change in position
relative to a frame of reference Speed is the distance traveled
in a given amount of time Speed=distance time
![Page 6: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/6.jpg)
Speed
The units for speed: meters/second (m/sec) kilometers/hour (km/hr) Speed that does not change
is constant speed
![Page 7: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/7.jpg)
Average speed
Total distance divided by the total time
Formula: Total distance total time
![Page 8: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/8.jpg)
Velocity Speed in a given direction Velocities in the same direction
combine by adding Velocities in different
directions combine by subtracting
![Page 9: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/9.jpg)
Interesting fact
Rockets are launched in the same direction of the earth’s rotation to get an extra boost of 1800 km/hr to its speed
![Page 10: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/10.jpg)
Questions What is motion? What is speed? How is it calculated?
What is average speed?
![Page 11: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/11.jpg)
Questions
How is velocity different from speed?
Which two factors determine an object’s velocity?
![Page 12: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/12.jpg)
Acceleration The change in velocity Acceleration is measured in
m/sec/sec or m/sec2
Formula is: (final velocity - original
velocity)/time
![Page 13: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/13.jpg)
Deceleration vs. Acceleration A decrease in velocity is
deceleration or negative acceleration
A distance-time graph for acceleration is always a curve
![Page 14: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/14.jpg)
Centripetal Acceleration
Acceleration directed toward the center of circular path
![Page 15: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/15.jpg)
Questions What is acceleration? What is the shape of a
distance-time graph for acceleration?
What is centripetal acceleration?
![Page 16: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/16.jpg)
Momentum Momentum is equal to the mass of an object times its velocity
momentum= mass x velocity
![Page 17: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/17.jpg)
Conserving Momentum The law of conservation of momentum states that the total momentum is NOT lost, only transferred
![Page 18: Motion SCIENCE](https://reader033.fdocuments.net/reader033/viewer/2022052507/55895dbcd8b42a593f8b46ae/html5/thumbnails/18.jpg)
Questions What is momentum? What happens to momentum
as the mass of a moving object increases?
What is the formula for momentum?
What is the law of conservation of momentum?