The life on earth would die instantly. Then, trees will die and EVERYTHING ELSE WOULD END! Then, the planet would die. 4.4 billion years later or so, the worl will be Back to normal. But this will never happen.
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It depends if it is affected by air resistance or not. If not then all objects close to the surface of the Earth have an acceleration of 9.81ms^-2 in free fall. If it is affected by air resistance you need all sorts of more information to answer that question, like the drag coefficient of the air.
you have to say JESUES MAN
In order to come up with an answer, we have to impose a couple of rules: 1). we're trying this on the earth 2). we're ignoring the effects of air 3). it's not moving at the beginning of the 5 seconds ... that's when you drop it from your hand Then the rock falls 400 ft in five seconds. What's really interesting is that it doesn't matter how much it weighs. ALL rocks fall the same distance in 5 seconds.
On earth it is responsible for air pressure. There are about 15 pounds of air above every square inch of the earth's surface. Or in other words, the volume of a column of air on Earth about a hundred miles high and a square inch in area weighs 15 pounds.
Any object near the surface of the earth, falling without air resistance and under the influence of only gravity, falls 789 feet. (rounded) Its weight makes no difference.