2007-10-04 13:55:45 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
it stays constant - its always equal to the gravitational acceleration - ~9.8 m/s on earth, but its usually portrayed as negative acceleration, as its also ALWAYS in the downwards direction (pointing towards the center of the Earth)
cool experiment you can do to prove this: take a textbook and a penny, drop them from the same height and i GUARANTEE they will both hit the ground at the same time- even though you'd expect the textbook to hit first! this proves that the gravitational acceleration is constant :D
2007-10-04 14:01:20 · answer #1 · answered by Nicholas Picholas 2 · 0⤊ 0⤋
For the vast majority of calculations, it can be assumed that acceleration stays constant. The acceleration due to gravity does not change significantly until you get a reasonable distance away from the Earth's surface (on the order of thousands of kilometers).
2007-10-04 21:01:32 · answer #2 · answered by msi_cord 7 · 0⤊ 0⤋
That's an interesting question, I have never thought about it but my thinking is that it would increase as it got further from the pull of gravity. However, the further it gets from the person throwing it the less speed it would have so it may just balance out to staying constant.
2007-10-04 21:01:06 · answer #3 · answered by unknown friend 7 · 0⤊ 0⤋
Stays constant
2007-10-04 20:58:49 · answer #4 · answered by jim m 5 · 0⤊ 0⤋
Constant
It first overcomes the upward initial velocity, then, as it falls, the speed is increased.
2007-10-04 20:59:43 · answer #5 · answered by science_joe_2000 4 · 0⤊ 0⤋