Does the weight or mass of an object affect the timing of a free fall without reaching terminal velocity? If no, why not? If yes, why?
Does an object thrown down from a building with a force of 1000N go faster than an object that is released from the same height? Why?
Can you people try to help explain some concepts relating to my questions please?
2006-09-07 16:03:21 · 5 answers · asked by Cookie Monster 1 in Science & Mathematics ➔ Physics
An acceleration of 9.8 meters per second squared means that the speed of a hypotetical free falling body increases 9.8 meters per second every second,
___ (9.8 meters per second) per second =
___ = (increase of 22 mph) every second
In other words, no matter how much is the free falling body's mass, they will reach the ground at the same speed *in vacuum*. In the real world, there is air, and in this case the terminal velocity will depend on the surface area of the free falling body. Bigger areas and bigger drag coefficients yield smaller terminal velocities.
--- --- ---
If you apply a force downward on an object -- throw it down, in other words -- the acceleration will be for a moment a bit more than 9.8 m/sec^2; let's say
___ (12 meters per second) per second
___ = (9.8 due to gravity+ 2.2 due to the force applied)
___ = (increase of 27 mph) per second
This means that if it takes one second until the object leave your hand, its speed increases 27 mph instead of just 22 mph. But once it leaves your hand, there will be only the action due to the gravity applied on it, and its speed will keep adding up 22 mph every second.
2006-09-07 16:26:13 · answer #1 · answered by Illusional Self 6 · 0⤊ 0⤋
Does the weight or mass of an object affect the timing of a free fall without reaching terminal velocity? If no, why not? If yes, why?
Without air friction all objects fall down with the same acceleration being g=9.8 m/s2.
Does an object thrown down from a building with a force of 1000N go faster than an object that is released from the same height? Why?
Yes, because the thrown object starts with more speed than an object only released.
Read your textbook well and apply what it says. Good luck.
Th
2006-09-07 23:32:59 · answer #2 · answered by Thermo 6 · 0⤊ 0⤋
weight or mass doesnt affect the timing of free fall. All objects are subjected to the same fore, the force of gravity and will fall with the same accelaration.
But this doesnt always happen because of the friction created by air and the atmosphere. So two bodies with same mass but different surface areas will decend with different accelaration.
An object thrown with a force of 1000N will go faster but after the force has been removed both the objects will have the same accelaration (of course if the friction on them is same).
2006-09-07 23:29:19 · answer #3 · answered by muggle_puff 2 · 0⤊ 0⤋
Without air resistance (terminal velocity) everything falls at the same speed because it is acted upon by the same force (9.8 m/s2)
and of course and object thrown with 1000 N will go faster. Acceleration is directly related to Force applied. One has 1000 N plus gravity, the other only has gravity
2006-09-07 23:07:47 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Enginering Tech math has all those formula's ..However seems a little beyond Kinematics http://en.wikipedia.org/wiki/Kinematics
2006-09-07 23:38:03 · answer #5 · answered by dogpatch USA 7 · 0⤊ 0⤋