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You can share by writing your post, uploading an image of your design sketch and prototype, or using the video recording feature to share your work for these phases of the engineering design process.

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1. Click the circle with the plus sign under a column.
2. Click on the 3 horizontal dots.
3. Select upload to select a saved image to your computer.
4. Select  voice to record your post.
5. Select film to record a video.

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You will cut the rope, and the process will begin.

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worked.... but I only have three things. How many were we supposed to have again? :) 

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worked.... but I only have three things. How many were we supposed to have again? :) 

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Get access to files anywhere through secure cloud storage and file backup for your photos, videos, files and more with Google Drive.

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Get cat in the hallway, have cat bat at a toy near a book stood up, when toy is batted at it knocks book over, book hits door and moves it

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Get cat in the hallway, have cat bat at a toy near a book stood up, when toy is batted at it knocks book over, book hits door and moves it

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Tape one end piece of rope to a soccer ball, the other end tied to the door knob. Place soccer ball on ramp (optional) and kick the ball the direction door is to be opened.

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Rocking chair, piece of wood, and a bowling ball.  Place wood off kitchen table ending in the seat of the rocking chair. Roll ball down ramp, hits, the back of the rocking chair, which hits the door to move the door.  

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Rocking chair, piece of wood, and a bowling ball.  Place wood off kitchen table ending in the seat of the rocking chair. Roll ball down ramp, hits, the back of the rocking chair, which hits the door to move the door.  

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Tie rope to door knob and attach to remote control car(is that allowed?) then accelerate car forward. If not allowed, any object that you could hit, kick or push could be tied to the rope.

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Tie rope to door knob and attach to remote control car(is that allowed?) then accelerate car forward. If not allowed, any object that you could hit, kick or push could be tied to the rope.

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Push the ball down the ramp.

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I realized in the design stage that I needed an object with more potential energy so I redesigned, mid-design lol. My sketch is directly above this comment I think. It's a bit sideways.

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I realized in the design stage that I needed an object with more potential energy so I redesigned, mid-design lol. My sketch is directly above this comment I think. It's a bit sideways.

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I will use desk fan and will position the fan at a distance doing several trials. The amount of air blown, distance it will move the door and the distance of the fan from the door.

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I will use desk fan and will position the fan at a distance doing several trials. The amount of air blown, distance it will move the door and the distance of the fan from the door.

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So, I'm not a Physical Science or Engineering person at all. I had 1 idea for this and it failed so miserably I am ashamed. Basically, I tied a cord around a step stool and pullled the leg closed so it would fall forward. Only, it fell backwards and the door remained open. I will stick to organisms and ecosystems I think. My next engineering project will be a nice garden.

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it's summer - let's use water!

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2. The dominos will fall and then cause the softball to go into motion.
3. The softball will go down an inclined plane and open the door.

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Comment for Cole: Excellent job! A in my book.

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Comment for Cole: Excellent job! A in my book.

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2. Ball will roll into a track and then cause a downward motion.
3. The door that was cracked will have enough inertia to move 15 cm.

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Shine the laser on the pillow, cat jumps on the pillow and dislodges the string holding the dowel rod up. Dowel rod falls into door, knocking it open!!

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I would redefine my prototype if it did not work and possibly add additional items.

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I would redefine my prototype if it did not work and possibly add additional items.

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I was wondering if the pressure from the fan or the ac would in fact move a door.  Great idea.

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I was wondering if the pressure from the fan or the ac would in fact move a door.  Great idea.

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Chose a kitchen cabinet due to carpet restraints. Process begins with dominoes, which knock over the tennis ball, which creates imbalance that pull on the knob.

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Testing would require time and revision. 

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Testing would require time and revision. 

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If physical science and engineering is not your thing, its okay!  Its not mine really either!  At least we know it and aren't trying to kid ourselves!  I too will be sticking with living things and ecosystems!

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We shall see!!!

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NOPE!! Dowel rod fell the wrong way!!

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I am a physics person, and mine failed MISERABLY!!!

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The ball is too light, I would need something heavier like a basketball, but pull the lever on the chair and the footrest "kicks" the ball towards the door and closes it.

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Choose a door to the backyard

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hot wheel car launch from ramp, the car hits book, book hits door . zory najera

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hot wheel car launch from ramp, the car hits book, book hits door . zory najera