I need a definition of ( acceleration of free fall)...
2007-12-30 02:04:08 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
thanks for ur help... but i need more detial... what is ( acceleration )?
2007-12-30 02:25:37 · update #1
all that answers are so helpful 4 me...
I need a small definition to write in a (report)... thanks alot 4 ur help...
2007-12-30 02:50:51 · update #2
The two above me are correct: acceleration of free fall is how fast gravity is pulling an obect to earth.
More detail on acceleration is the following:
acceleration is defined as how fast the velocity (speed) is changing at any given time. Take for example your car. If you are driving at 40 mph and are staying at that speed, you have zero acceleration because speed is not changing. Now lets say that you are start pressing the accelerator and your speed is going up and you eventually reach 50mph, then you had to accelerate because your speed changed. depending on the time it took to get to 50 mph, that would be your acceleration.
acceleration in equation form is:
a = (change in velocity)/(change in time)
So when we say accel due to gravity (free fall) is -32ft/s^2 or -9.81 m/s^2, we're saying the following: every second, the velocity changes by -9.81 m/s or -32 ft/sec depending on which unit you're using for distance.
If you need more detail, please ask.
2007-12-30 02:32:05 · answer #1 · answered by bmwminihash 5 · 0⤊ 0⤋
Acceleration is a change in velocity / time.
When you say "free fall" you would be speaking of Earth's gravitational influence so we can use 32 ft/sec/sec. (increase in velocity)
But, acceleration can be any change from any force in any medium.
2007-12-30 02:59:32 · answer #2 · answered by craig b 7 · 0⤊ 0⤋
free falling objects accelerate at about 9.8m/s^2
it accelerates because of gravitational; force pull
2007-12-30 02:14:39 · answer #3 · answered by hannah 4 · 0⤊ 0⤋
32 feet per second, per second.
2007-12-30 02:13:55 · answer #4 · answered by someone else 6 · 0⤊ 0⤋