This video is a great example of relative Speed

Sep 29, 2021 · 6:38 AM UTC

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Replying to @Sciencemaze
Im soo confused.
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So speed is relative because this guy is doing 0km relative to the truck right even though he's jumping up and down yet the truck his jumping on is moving relative to the ground right? And that ground is moving since earth rotates around the sun, It get deeper, understand though?
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Replying to @Sciencemaze
あ、質量保存の法則ってこんなに宙に浮いてもいいのね。ここまでくると不思議さが増すな。 電車は納得できてたけど。 この動画ずっと見てられる。
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Replying to @Sciencemaze
when we fly in an airplane, do we hit backwards due to the forward motion of the plane or stay still like this?
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Depends... In a way you are moving at 500kmh in your plane according to SOG, but earth is moving and the solar system and the universe hence why speed is relative
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Replying to @Sciencemaze
As a child, I used to think that if I jump inside a moving bus, then the body of the bus would move ahead and my body might shift behind. My childhood question is resolved now. Thanks for this video/experiment.
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Replying to @Sciencemaze
Newton II
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First, law of inertia. 2nd is f=ma
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