Young Sheldon: Sheldon's Train
00:00 - 01:06
1m 6s
Sheldon explains how he uses a toy train and a ball to prove Newton's first law of motion. As the train moves, he pushes a button to propel the ball in the air. The ball lands in the same spot on the train where it was propelled. The ball moves at a constant velocity in an inertial frame of reference.


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