Fall Definition and 921 Threads

Can this happen ? I mean really big meteors which can't be smashed or destroyed when coming near our Earth... Thank you

we have a pencil and you put the pencil with the spearhead of it downward (lets say in Earth and on a table), now you release your hand from the pencil to which direction will the pencil fall? after a few experiments will the direction be the same as the first observation?

I have read through the other free fall problems here on the boards and still cannot correctly solve the following: One-half second after starting from rest, a freely falling object will have a speed of about: a)10 m/s b)2.5 m/s c)5 m/s d)20 m/s I find the answer to be (b), 2.5 m/s, but...

the question is the topic, but I am sorri i don't have any numbers i can deal with, because we're just supposed to demonstrate that we understand how we solve htese porblems. unfortunately, I don't. could anyone just give me random numbers and tell me how to olve this question? thanks. I am...

a waterfall is 30 m high and 10000 kg of water flow over it every second A) calculate the potential energy PE = mgh got 2.94E6 joules B) calculate the power delevered by the water of all the potential energy is converted to work F = mA F= 10000 * 9.80 f = 98000 w = Fm w 98000 *...

I ran across this physics problem in class yesterday, it seems simple but...... (assume simplest case) ok...a screw at the top of an elevator that is traveling upwards comes loose and falls. Does the elevator speed going up effect the free fall time? (like does the elevator move toward the...

[SOLVED] Beyond Babylon: Europe's Rise And Fall "Do not think that I came to bring peace on earth. I did not come to bring peace but a sword" (Mat. 10:34). That bold statement of Jesus the Christ knocks down all the traditional images of "God with us." Jesus declared WAR - not peace - on...

Hi all, one simple question. You have two evenly long rows of dominos. In one row the dominos stand further apart than in the other. If you start both rows at the same time, which will be faster? My guess is the one with the stones closer because the dominos don't need to fall as deep as...

I heard somewhere that temperature actually begins to fall at dawn and then goes up later on. Does anyone know why this is? Thankyou.

Please help. The first question I don' know how to solve for distance because I don't have time in the formula. I've spent three days, and my friends and I are stumped, and had no-where else to turn, someone please help me. 1. You shoot a 30g bullet straight up at a velocity of 724m/s. How...

An object is releaseed from rest at time t = 0 and falls through the air, which exerts a resistive force such that the acceleration a of the object is given by a = g - bv, where v is the object's speed and b is a constant. If limiting cases for large and small values of t are considered, which...

Can anyone help me out with some free fall equations? and: Assume: g = 9.8 m/s A stone falls from rest from the top of a cliff. A second stone is thrown downward from the same height 2.1 seconds later with an initial speed of 41.16 m/s. They hit the ground at the same time. How long...

I'm sorry, I am just having difficulty with being sure of myself when it comes to these problems. This one states: A stone is dropped into a river from a bridge 43.9m above the water. Another stone is thrown vertically down 1.00 s after the first is dropped. Both stones strike the water at...

model rocket - free fall acceleration again :( The problem states: A model rocket fired vertically from the ground ascends with a constant vertical acceleration of 4.0 m/s^2 for 6.00 seconds. Its fuel is then exhausted, so it continues upward as a free-fall particle and then falls back down...

Consider a particle located at (x0, y0), having inital velocity v0, and the angle of inclination of the velocity vector is [the]. The particle is subjected to a vertical acceleration of -g. It's equation of motion is... x = x0 + v0*cos[the]*t y = y0 + v0*sin[the]*t - 0.5*g*t2 If t>0...

I suppose I am having trouble with this problem because there are no numbers given. Here is the problem: A ball is thrown down vertically with an initial speed of Vo from a height of h. a) What is its speed just before it strikes the ground? Speed is just the magnitude of instantaneous...

Need Help! Do objects of different mass fall at the same rate? If yes or no, why? Thank you.

Gravity? Did he fall or was he pushed? A. relatively simple question, is gravity a pulling force or a pushing force, or both?

The once great empire of the Classic Maya fell rather suddenly. (After around 800 A.D. there were no monuments erected with writing on them, population greatly reduced.) What do you think happened? Any theories[list=1] Food shortage Internal strife External attack Revolution (Similar...

i'm talking about droping a ball into a free fall under assumption that it can pass thru the Earth's center all the way to minus height point. case 1:if you say that the force at the dropping point is F=G(/m/R)(M/R)<>0 then the equilibrium point is the center of the earth.but when the ball...

Baghdad Falls ...and Iraqis rejoice. Its not over yet though. There are still some pockets of resistance in Baghdad and a few other places. Tikrit is also still not taken. Beyond that though, from now on its just janatorial work (mopping up).