Name: 對墜落物的誤解 (Misconceptions About Falling Objects)
Uploaded: 2021-01-14T10:52:19.000Z
Duration: 3 min 22 s
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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.

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未來簡單式

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

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

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 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.

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.

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?

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.

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

The gravitational force on both these boys are the same.

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

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.

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.

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.

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?

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

constant

evidence

force

intuition