2007-01-28 03:01:49 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Terminal Velocity.
2007-01-28 03:05:06 · answer #1 · answered by Black Rabbit 1 · 0⤊ 3⤋
They can fall no faster than their terminal velocity (which depends on the fluid they are falling in and their particular geometry). If you are dropping and object in a vacuum, however, it depends on how long the object is allowed to fall:
v = v0 + g*t
where t is time, v0 is initial velocity and g is the acceleration due to gravity (g = 9.8 m/s^2).
This is, of course, not ALWAYS true since Einstein's theory of relativity says that nothing can travel faster than the speed of light. Once your object reaches a speed close to the speed of light, the speed will depend on the observer's frame of reference.
2007-01-28 12:04:03 · answer #2 · answered by clydesdale1981 3 · 0⤊ 0⤋
The speed at which an object fall depends upon the height, and weight of the object.
2007-01-28 11:11:31 · answer #3 · answered by andrew91025 3 · 0⤊ 1⤋
It's not how fast objects fall because they gain speed every second.As they falls, they all fall at a constant acceleration which is -9.8m/s^2.
2007-01-28 11:08:48 · answer #4 · answered by 7 · 1⤊ 0⤋
if we neglect the air resistance then
a body falling from top has a spped of 9.8m/s downwards. after 2 seconds it becomes 19.6m/s and so on.
2007-01-28 11:42:09 · answer #5 · answered by prat_apr89 1 · 1⤊ 0⤋
A free falling objet falls at 9.8 m/s^2
2007-01-28 11:08:46 · answer #6 · answered by manuel w 2 · 0⤊ 1⤋
it will fall with acceleration 9.81ms-2 and then due to resistive forces such as air resistance, there willl be a terminal velocity....
http://en.wikipedia.org/wiki/Terminal_velocity
2007-01-28 12:06:15 · answer #7 · answered by Krish 5 · 0⤊ 0⤋
i think that it's 9.8m/s^2.
2007-01-28 11:09:48 · answer #8 · answered by ♥2cute4u♥ 3 · 0⤊ 1⤋