Blog post one-define and inquire
Two design ideas I like:
Target age:
Gravity car: 10-16
Newton’s cradle: 12-18
Pros and cons: pro for gravity car, easier to make con: material is harder to find (pulley)
pro for Newton’s cradle : has more concepts of physics and you learn more things from it con: harder to make (has to be more precise/exact in measurements)
Blog post two-develop and plan
New skills: I needed to know how pulley works, trial and error, and used gravity in this project.
Blog post three- create and improve
The car moved but the nut didn’t go up as the wheels moved. Feedback I got was to put hot glue on the ends of the stick (connecting two wheels) so that the stick will move along when car/wheel moves. After correcting that, the stick moved along as the wheels moved BUT the string that was tied to the nut did not wrap around the stick as it moved forward. I fixed it by glueing the knot I made from string to the stick. This helped the string wrap around the stick as the car moved. After fixing both of these problems, the nut successfully moves up when the car moves forward.
Blog post four-reflect and share
The car worked in the end. The nut moved up as the car moved forward (potential energy increase, kinetic energy decreased.) The nut weighs, so gravity helps nut go down. If the Nut gets pulled down, the string forces the car to move. The building part was successful because I built the car well enough so that it would move. The science part with the car moving and nut moving up needed to be improved because the nut didn’t move up at first. It impacts the environment slightly because I used wood and plastic (wheels are probably plastic) to build the car, but the car itself doesn’t affect the environment.
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