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Since you did not specify at what height or geographical position then I rounded up the number, so;Correct answer. Unfortunately, I can't give you full credit. You took it upon yourself to set gravity to 10m/s*s rather than the universal 9.8. Fittingly, I'm awarding you 98/100.
How high must one jump (in a vacuum obviously) so that you stay in the air for 1 second?
Given your average bullet (well I did paint a smiley face on it), if you fire a gun on level ground with the gun level, and you drop a bullet at the same time from the same height as the gun, which hits the ground first? Assume a flat earth no matter how much it irks you.
Given your average bullet (well I did paint a smiley face on it), if you fire a gun on level ground with the gun level, and you drop a bullet at the same time from the same height as the gun, which hits the ground first? Assume a flat earth no matter how much it irks you.
It depends which way the wind is blowing, at least if the gun is rifled.
On a flat earth both bullets will hit the ground at the same time unless the flying bullet's aerodynamics keeps it in the air (highly unlikely if it is spinning since there will not be a pressure differential on any side).Ah, but what do you get when you combine the bullet's spin with a wind blowing horizontal and perpendicular to the direction of motion? On one side, the wind and the local disturbance to the air are in the same direction, and on the other in opposite directions. This will change the trajectory just like with a curve ball, but because of the limitations on wind and the direction of rotation, the bullet will either go up or down.
I was looking for "they hit the ground at the same time", but most of these comments are intriguing. Maybe they wouldn't hit together due to a stong enough cross wind that would cause a climb or drop on one side of the spinning bullet. The problem is that all of the knowledge that I learned getting my BA in physics (not a misprint) was in vacuums and flat plains.Given your average bullet (well I did paint a smiley face on it), if you fire a gun on level ground with the gun level, and you drop a bullet at the same time from the same height as the gun, which hits the ground first? Assume a flat earth no matter how much it irks you.
No! The bullet has an initial push going up thus countering gravity's pull, while going down it is affected only by gravity plus air friction.I was looking for "they hit the ground at the same time", but most of these comments are intriguing. Maybe they wouldn't hit together due to a stong enough cross wind that would cause a climb or drop on one side of the spinning bullet. The problem is that all of the knowledge that I learned getting my BA in physics (not a misprint) was in vacuums and flat plains.
OK, here's another one. Fire a gun straight up in a real world situation. Does it take the same time to go up as come down?
So what about in a vacuum? Electrolux to be specific.No! The bullet has an initial push going up thus countering gravity's pull, while going down it is affected only by gravity plus air friction.
Alas I don't recall the video... but you're welcome!Thanks for that 28.1.11 video Wiccan Child. A bit daunting due to implants but I got through it.
I don't believe he was - I think he was referring to the fact that good science must be done divorced of personal bias. We must embrace failed results as well as successful results with equal zeal, because they're still results.You DO know he was joking?
No: the terminal velocity of a standard bullet is (roughly) an order of magnitude lower than its muzzle velocity (that is, its velocity as it leaves the gun's muzzle). Plus, bullets wander by up to a mile as they descend due to wind, so there's going to be significant tumbling which changes the bullet's aerodynamic properties further.I was looking for "they hit the ground at the same time", but most of these comments are intriguing. Maybe they wouldn't hit together due to a stong enough cross wind that would cause a climb or drop on one side of the spinning bullet. The problem is that all of the knowledge that I learned getting my BA in physics (not a misprint) was in vacuums and flat plains.
OK, here's another one. Fire a gun straight up in a real world situation. Does it take the same time to go up as come down?
Which is better: Diet Coke or Coke Zero?
Hint: COKE ZERO.
Unsweetened Ice Tea.
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