Gravity info needed.

[Canadian GP]

After an afternoon of friendly bushball I was complaining that my Piranha was not getting a lot of distance even with a full tank. My bud pipes up and says all balls take the same amount of time to hit the ground. I start laughing...."you're saying 2 balls fired at the same time will hit the ground together, no matter what shoots them?"

He says if you drop a ball from a barrel it will hit the ground at the same time as one fired from any marker.

True or false?

[Sinnet]

all shots fired at the same velocity at the same angle under the same conditions will hit the ground at the same time.


so, true

[Sir Chopsalot]

yup

[Canadian GP]

NO NO...he says a ball dropped from the front of a barrel(not shot)will hit the ground at the same time as a fired ball.

[LittMag]

If only people paid attention during their physics classes.

If you fire a gun/marker/blowgun/dartgun/small child out of a cannon from a level parallel to the ground. And drop something the same size from the same level they will both hit the ground at the same time.

If that was to convoluted for you, then just accept that what your friend said was true. As long as the marker isn't angled upward or downward, the paint will fall at the same speed, and hit the ground at the same time.

[shartley]

Originally posted by LittMag
If only people paid attention during their physics classes.

If you fire a gun/marker/blowgun/dartgun/small child out of a cannon from a level parallel to the ground. And drop something the same size from the same level they will both hit the ground at the same time.

If that was to convoluted for you, then just accept that what your friend said was true. As long as the marker isn't angled upward or downward, the paint will fall at the same speed, and hit the ground at the same time.

What? That is NOT true. LOL

If you DROP two objects of the same relative size and shape, but different weights, they will hit the ground at the same time. But if you FIRE one at the ground and drop another, they will NOT hit the ground at the same time. If the one fired is fired at a higher velocity than the object being dropped, it will reach the ground faster.

The dropped object takes time to reach maximum velocity, and is doing so from a dead stop. The object being fired is already moving at a substantial speed.....

Under YOUR way of thinking, if you also fire two guns at the ground, one firing a standard load 22, and the other firing a Magnum 45 load, they will both hit the ground at the same time too, or that a standard load 45 and a Magnum load 45 would do the same.... but this can't be farther from the truth.

I think you may want to go take those physics classes again.

(ADDED: Before getting out the ropes and lynching me... keep reading this thread... I know many would LOVE to take a shot at SHARTLEY... but you missed your chance. I am keeping these online to show you all I DO have a sense of humor. )

[yeahthatsme]

i think he meant the gun would be shooting horizontal....

[shartley]

Originally posted by yeahthatsme
i think he meant the gun would be shooting horizontal....

That still would not work.... What is the distances used? Velocities? etc.

His pals ideas are wrong.. period... sorry.

(ADDED: Before getting out the ropes and lynching me... keep reading this thread... I know many would LOVE to take a shot at SHARTLEY... but you missed your chance. HeeHee.. keep reading. )

[petefol]

when they fall they both accelerate at -32 feet per sec per sec or -9.8 meters per sec per sec, even if one object is moving and the other is just falling, they still fall at the same rate.

[LittMag]

Yes, I meant horizontal, I'm sorry about that.

Distance and Velocity have nothing to do with the acceleration of an object (regardless of weight) towards the ground. An objects horizontal speed has nothing to do with how quickly it falls.

This is all assuming that there are no effects of friction or other sources.

http://www.physicsclassroom.com/mmedia/newtlaws/efff.html

[shartley]

[AGD]

Saaaammmmmm,

Do you really know what your talking about here???? Just to confirm, you believe that if a ball is fired horizontally from a barrel it will take less time to hit the ground than a ball dropped from the same height? This is of course dissregarding all spin effects.

AGD

[shartley]

Originally posted by AGD
Saaaammmmmm,

Do you really know what your talking about here???? Just to confirm, you believe that if a ball is fired horizontally from a barrel it will take less time to hit the ground than a ball dropped from the same height? This is of course dissregarding all spin effects.

AGD

LOL Sorry... too late Tom. Read the post above yours.

(Plus you have to cut me some slack.... long day, much work, and major laptop problems... LOL)

[agdemagman69]

lol, i remember a lecture last year where the same exact thing happened

everybody was like NO! that wont happen, and then my teacher made a demonstration with a dart gun and a dart, in the same format as littmags experiment


ITS TRUE!!

[LittMag]

Shartley... you really had me runnin around for a bit there. I was surprised that you were the one questioning what I had said, but as long as we can all agree what should happen in an ideal world it's all good I was scrambling to find the animation I saw earlier of a cannon firing a ball and someone dropping one at the same moment, but all I found was the elephant and feather.