Race cars and ramps physics science expo4/30/2023 ![]() ![]() It uses Mindsensor’s ball bearings, large wheels and a heavy battery pack (324gr). We started with a typical LEGO car (150gr) and it took it 4.42 seconds to complete the four meter distance. We then started to use my special Ramp Racer. All races were completed three times and the times and speeds reported are averages. You can for example place the phone at the end of the ramp to measure the LEGO car’s maximum speed. You can also synchronize two phones running the app and measure between a start and finish gate. It allows you to measure the speed of a car with a smartphone. The SpeedClock App is just what you need. ![]() A reliable and precise measuring system is a much better solution. Of course, you can race multiple cars at the same time but then you might encounter collisions and photo finishes too close to call. ![]() We then measured four meters from the starting point up the ramp to the finishing line. We put two base plates together as the ramp and inclined it at ten degrees. We setup a little ramp race at home and I would like to share our setup and results with you. The physics around the race are well understood, but experiencing them in practice is a great learning experience for students. Racing LEGO cars down a ramp is a popular attraction not only in the LEGOLAND Parks, but also at Brickshows and classrooms around the world. ![]()
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