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  • let's say at Jack holds both balls above his head and then he drops them at exactly the same time.

  • What do you expect to see?

  • Well, they're gonna hit the ground at the same time, expecting to both land at the same time.

  • Same time.

  • Thought this one to hit the ground.

  • First, however, they will actually both hit the ground.

  • Is that scythe?

  • Black one clearly feels a lot heavier.

  • So the standard misconception is to believe that the black ball will accelerate at a greater rate and reach the ground first this year, many people had an idea that both balls would land at the same time, but they didn't know exactly why.

  • I found there were some different misconceptions.

  • For example, many people seem to think that as an object falls towards the earth, it falls with a constant speed from this hot yet pretty much just a constant speed all the way down space.

  • Yeah, I think it would be the same constant speed.

  • I think it's constant.

  • Remember being constant?

  • I did decently in physics, and I seem to remember that's the answer.

  • Where's the truth is the speed of both balls is changing all the time.

  • The balls are speeding up as they go towards the ground.

  • That's what the force of gravity does on them.

  • It makes them accelerate.

  • It gets him to speed up.

  • Another misconception, I discovered, was that some people believe both balls should have the same gravitational force on them, even though the black ball is clearly much, much heavier.

  • The reason I think they said this was because they knew both balls needed to reach the ground at the same time.

  • So they reasoned that the force on them must be the same.

  • Tell me about how the gravitational force on this ball compares to the gravitational force on that booth is gonna be very similar in terms of gravitational pull.

  • The both of the same on the bullet.

  • Same right.

  • I'm like Einstein, but same gravitational force around the whole world.

  • Right, Because the gravitational pull on earth is the same on both objects.

  • Are you saying that the force on them is the same?

  • The pole.

  • But you felt the pull and you've told me the pole is different.

  • No, I said the weightiest evidence in the whole of it is heavy and has more gravitational.

  • But when I dropped them, then they get equal gravitation.

  • Pull somehow.

  • Don't you think it's gonna be, like, five times as much?

  • You think?

  • But it's not the way you're asking it.

  • Yes, but scientifically speaking, No.

  • The gravitational force on both these boys are the same.

  • The gravitational force on part of these boys is the same.

  • Is that where you actually believe?

  • No, but don't tell me what you believe.

  • I believe it should be more on this simply for the fact that this is heavier.

  • I just Intuition tells me that it should be more, but after learning physics, we learned that it is actually the same.

  • I actually think the force on this ball is more force on this.

  • Made.

  • I I I'm not trying to message here.

  • So, like in real life, in real life and in physics, I will tell you that the force on this ball is more all right.

  • Ready?

  • 321 Yeah, same time.

  • I would say the force on the medicine ball is like a lot more because it's got a lot more weight.

  • It's got a lot more mass, but it's got a lot more inertia Yeah.

  • Oh, you guys remember that, right?

  • It's got a lot of resistance to acceleration.

  • So it takes more force to get it accelerating at the same rate as this bowl.

  • And that's why they accelerated the same right?

  • Thank you guys so much for going along.

  • I appreciate that.

let's say at Jack holds both balls above his head and then he drops them at exactly the same time.

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A2 初級

對墜落物的誤解 (Misconceptions About Falling Objects)

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    林宜悉 發佈於 2021 年 01 月 14 日
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