{"id":61938,"date":"2026-03-29T05:33:22","date_gmt":"2026-03-28T20:33:22","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=61938"},"modified":"2026-03-29T05:33:22","modified_gmt":"2026-03-28T20:33:22","slug":"smash-together-half-the-speed-exploring-momentum-with-colliding-carts","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=61938&lang=en","title":{"rendered":"Smash Together\u2014Half the Speed? Exploring Momentum with Colliding Carts!"},"content":{"rendered":"

I’m Ken Kuwako, your Science Trainer. Every day is an experiment!<\/strong><\/span><\/p>\n

“CRASH!” Two objects collide and start moving together as one. We see these “collisions” all the time in our daily lives\u2014whether it’s a fender bender or a contact sport. But hidden within these moments are the beautiful yet strict “Rules of Physics” that hold true anywhere in the universe. Today, I\u2019ll show you an experiment using two dynamic carts to reveal the mystery of how Momentum changes before and after a crash.<\/p>\n

Tools for Measuring the Invisible Force of Motion<\/h3>\n

To investigate Momentum\u2014which in physics represents the “oomph” or “power” of an object’s motion\u2014we are using two handy speed sensors called “BeeSpi.” These little devices are a scientist’s best friend, instantly measuring the speed of any object that passes through them.<\/p>\n

\u300cBee-Spi<\/a>\u300d<\/p>\n

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The dynamic carts used in this experiment are calibrated to exactly 1kg. By conducting the experiment on this larger scale, we can see the “trends” of physical laws clearly, without being distracted by tiny errors like friction. First, let\u2019s check out the experiment in this video:<\/p>\n