The above is true for objects falling in a vacuum, which is rarely the case on Earth, where air resistance works against the object and prevents it from picking up more speed. On the moon, which has no atmosphere and is a virtual vacuum, objects accelerate much more slowly than on Earth -- only 1.6 m/s2 -- but achieve much greater velocities in free-fall because there is no air resistance.
More discussionThe above is explaining the acceleration due to gravity. The model for the time it takes for an object to fall from rest under uniform gravitational field is: SQRT(2h)/a), where h is the height of the object and a is the acceleration due to gravity, wherever you may be in the universe. (On Earth, a = 9.81m/s2).If there is a changing gravitational field -- that is, if you are really far from a massive object, such a planet or star -- then it involves calculus and integrals.
There is a good explanation of how fast things fall on this web site: www ae911truth org
Littlegeek's explaination:
It probably depends on gravity more than weight because a guy once dropped a lage object and a small object (the large object was heavier). They landed on the ground at the exact same time. "
Source - WikiAnswer's Users 58.110.79.89 and StephenJWilson
9.8m/s^2
This is 9.8 meters per second, second.
yes, weight plays a role in how fast an object can fall
9.6 m/sec2.
It will fall just as fast as an object of any other mass - assuming that air resistance is negligible. That is to say, if an object has a lot of surface area, it will fall slower due to air resistance.
45.5 mph
if an object is lightr it will fall slower because gravity wont take it down as fast if it is heavier it will make the gravity pull it down faster
Depend on if you are talking a "free-fall" or an object descending the side of a mountain. Free-fall all objects regardless of weight fall at the same rate of speed (36 feet per second).
not necessarily, due to wind resistance and the surface area of said object the object will not always fall as fast. ex. a human sky diving. if they are in a pencil dive, they will fall a lot faster then if they are in a spread eagle position. but due to its mass it will sure as hell hurt a lot. so yes and no
You need the amount of time that it took to fall the 45m.
An object's top speed is called Terminal Velocity.The terminal velocity of an object can be calculated via a formula. See the related links.
very fast how fast can u fall
You can't fall in space, there is no gravity. An object will travel as fast as it is accelerated and continue at that speed forever as there is no air resistence to slow it down.
Such an object is said to be in "free fall".