If you were to drop a feather and a brick at the same time on earth, on moon, on mercury, and on venus...?

which would hit first? do they move in the same direction? fast or slow?





(Each one is seperate.. earth moon mercury and venus.. different experiments... not all at the same time (impossible :))If you were to drop a feather and a brick at the same time on earth, on moon, on mercury, and on venus...?
On Earth, the feather falls more slowly, as it has air to fall through and is very light. On the moon, they fall at the same time because there's no atmosphere to interfere with the feather. Apollo 15, I think it was, using a hammer. Mercury would see largely the same outcome as the moon, although there may be some thin atmosphere. On Venus, they'd both melt, but otherwise I expect the feather would fall much slower because of the dense atmosphere. I'd be interested to hear what effect 90 atmospheres' pressure would have on the speed of a falling brick. Anyone?





Oh, and relatively, the brick would fall fastest on Earth as it has the highest acceleration due to gravity. Followed then by Venus, Mercury, and the moon.If you were to drop a feather and a brick at the same time on earth, on moon, on mercury, and on venus...?
All massive objects have gravity. A mountain has gravity and if you live near one ';down'; is slightly off kilter. If you live over an oil deposit you weigh infinitesimally less than if you live over solid rock; oil companies were very happy when they learned this trick. There are gravitometers so sensitive they can see when a person walks by them by mass alone.





The Earth is pretty heavy. It's the biggest rocky object in the solar system.





http://en.wikipedia.org/wiki/Solar_syste鈥?/a>





The moon and Mercury are relatively small and unable to hold onto an atmosphere. Venus is about 80% of Earth's mass and has a very thick atmosphere.





In the absence of air resistance there's no difference between a feather and a brick. On the moon they will hit simultaneously. On Mercury they would hit simultaneously except it's hot enough to melt lead and the feather will probably be gone before it hits the ground.





Venus has a thick atmosphere, thicker than Earth's. The feather will be slowed down... if it doesn't vaporize. Venus is trapped in a perpetual super greenhouse effect and it's even hotter than Mercury.





On Earth normal rules apply. The brick wins the race down every time. This is part of why it took so long for people to figure out what gravity was all about.





There are no planets where gravity points the wrong way. They would fly apart! As near as anyone can tell gravity works the same everywhere in the universe.
For the relative speed of the brick, just compare the masses of the various bodies. That is assuming you droppeed them from the same height.





It would be the same for the feather except for air resistance. That doesn't come into play on Mercury or the Moon so there the feather's speed is the same as the brick. However on the earth, the feather will fall more slowly due to air resistance. I don't know if the atmosphere on Mars is thick enough for air resistance to come into play. It might.

hair accessories