Newton's Laws Examples (part 2)

[holligirl426]

Thank you SO much for posting these videos, you helped me get full marks on my physics exam!! (: Btw, can you post some videos on thermal expansion and calorimetry? Thanks a bunch (:

[Kricardose]

I am very happy to see the vidoe A couple of more examples involving Newton's Laws after you give this

[bebeheuy]

I Love The Video A couple of more examples involving Newton's Laws It Can Increase My Knowledge

[Mjhond]

Steady I Really Like This Video A couple of more examples involving Newton's Laws

[MrPEDOCTOR]

it makes i understand better.

[afghaniii03]

You're messy!

[booiiboot]

INTUITION

[saran12ableable]

@aniva97

Correct go along wiv u!

[aniva97]

you should teach our teachers how to teach.

[martinHETERJAG]

lol @ ariforce :D

[rayray66]

intuition

[kurozaki45]

how did he get 1/5 the acceleration i got lost onthe last vid

[MeMeMetro]

@kurozaki45 its 2 am , u have exam tomorow? lol, i think it was given in the problem

[gerben007gb]

this is funny.

the terminal velosidy on a ant isn't a speed what wil kill the ant.

that is why ant's can't fall to there dead.

[609197]

finally a teacher i understand... i had enough of foreign teachers that cant explain things well in english. (practically teaching myself

[XshadowXkilla90X]

Lovin the *computer Chalk Board* :D

[Pure2200]

even in my uni , i get the profit!

thanks alot! :)

[varavind]

Excellent tutorials!

[Taowhr]

3:07 wow you've skydived before? How was it?

[MrZhadoba]

Lemme see if I got this straight. At terminal velocity the force of air resistance is equal to the force of gravity even if the skydiver's body is parallel to the ground or he's actually diving so there's more pressure on his head. This force exerted by the air will change as there is a significant change in the surface the skydiver occupies in the air, does this mean more mass or actually same mass occupying more space horizontally? I'm confused :/

[bronze83]

@MrZhadoba Correct, but the mass does not change. The terminal velocity depends on the shape of the object. As the shape or surface area exposed to air resistance changes so does the velocity at which the air resistance can cancel the objects weight (mg).

[tederose1943]

What software are you using?

[unsforlife]

Ha ha. 50 percent faster, or 33 percent faster? A lot faster...

[Dundertaker]

So when the sky diver reaches terminal velocity, is he free falling?

[pheonixofpeace]

No. He is not free falling because he has air resistance due to his increased surface area. If there less surface area, there is less air resistance

[purpletin100]

There also has the bouyancy force acting on the person, therefore the gravity is not totally equals to the air resitance. the large surface area will decrease the terminal velocity.

[yyAjax]

thank u , it should help me on tmr's test

[sahatnow]

The last problem was pretty tricky indeed. I had a general idea that i would be the same force exerted on the sky diver, since his terminal velocity didn't really matter in finding Fg in the first place. It makes sense now.

[megaelliott]

ration between mph and m/s is that there is about 0.4469'4' m/s is a mph. 1mile/hour = 1609meters/hour. 1609meters/hour=0.4469'4' meters per second.

[mcuchy61]

lol air force

[MMX0710]

Thank you very much!!!

[Winsunn307]

I really, really wish you were my teacher at school.

[m1dnightshadow]

thanks.. your videos help a lot... been looking at the calculus ones and now physics :p

[DeathByLight]

THANKS~!