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  • The theory of gravity and velocities require a vacuum. Two heavy cannon balls, different mass but the exact same materials and shape, will result in a nearly identical impact.

  • so heavy does an object have to be to cancel out the air density ,,,??why did the wheel and car fall at the same speed but the pther objects differed?

  • wind resistance..

  • Wind resistance.

  • 4:30 In your Face Aristoteles =D

  • gravity pulls harder on heavier objects, but heavier objects have more innertia,

    and so (in a vacuum) 2 objects always fall at the same exact rate , ALWAYS

  • :0

    the first one shocked me!

  • Comment removed

  • some1 in africa could have used that car as a house..

  • @bosaap10 lol

  • @GB016768 :D

  • and everything accelerates at different rate

  • everything has a terminal veloctiy the max speed it can go. Some things on earth may land at different times due to air friction and drag and the air resistance. on the moon a hammer and a feather landed at the same time. the only reason the pillow was slower becuause it had more air resistance than the cooker

  • @xXEnZeR0Xx that has to do with air ...in a vacuum , 2 objects will keep accelerating as they fall .

  • u can see that for a short time its accelerating with same rate

  • Izec Nyoten

  • Do they not know about air resistance?

  • Decades ago, US astronauts proved that a hammer and a feather fall at the same rate, on the Moon.

  • @ZombiedustXXX Because theres no wind on the moon

  • @ZombiedustXXX even tho im pretty sure using a vacuum chamber was easier >.<

  • These guys are funny. But seriously, who doesn't realise that air resistance means a pillow won't fall as fast at the cooker over such a fall? Same for the balls, it would've been a far great difference if they had of used a ballon and a cannon ball :-)

  • @69aussieguy

    To say something like this is soley based on air resistance is naive, you have to take other things into consideration, wind speed, wind direction, air density and terminal velocity, to name a few.

  • @uuber666 actually, wind is a vector quantity that acts parallel to the horizontal of the force, since the horizontal and vertical components of forces are independent of one another in trajectory, the wind speed and direction don't effect the decent of the object. air density and terminal velocity are closely related and would be calculated at the same time whilst taking air resistance into account.

  • wot is your next brainiac video goig to be

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