Let's say you are traveling at 100 MPH in a forward direction and have a gun that shoots bullets at 100 MPH. If you aim it backwards and fire does the bullet drop straight down? I assume the answer is yes but I'm not 100% positive....
If you are traveling at 100 MPH and have a gun that shoots bullets at 100 MPH
- Thread starter cjchaps
- Start date
IAteYourMother
Lifer
- Nov 3, 2004
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to someone not in the car the bullet would appear stationary. If you're in the car, the car isn't moving relative to you, the bullet would go south away from you at 100 mph.
wait so if a major league baseball pitcher throws a baseball out that same car...it's not gonna leave the car? wtf
DVad3r
Diamond Member
- Jan 3, 2005
- 5,340
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Im fat lazy and slow, so let's say the plane is going mach 2 and the bullet get's shot out at mach 2 then it's speed is mach 4?
Aikouka
Lifer
- Nov 27, 2001
- 30,383
- 912
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No, it wouldn't.
1) There's a wake that occurs (hence why Nascar people use Drafting to increase their speeds) when you drive that would at least throw the bullet even if it did stop in mid-air
.
2) Once the bullet is fired from the "stationary" object (i.e. gun), the velocity of the stationary object shouldn't apply, therefore there is no "canceling" like you're trying to suggest.
EDIT: To elaborate on "stationary", I don't mean the object doesn't move at all. I meant it's stationary on the moving vehicle as in the gun is counted as moving at 100mph along with the truck.
1) There's a wake that occurs (hence why Nascar people use Drafting to increase their speeds) when you drive that would at least throw the bullet even if it did stop in mid-air
.2) Once the bullet is fired from the "stationary" object (i.e. gun), the velocity of the stationary object shouldn't apply, therefore there is no "canceling" like you're trying to suggest.
EDIT: To elaborate on "stationary", I don't mean the object doesn't move at all. I meant it's stationary on the moving vehicle as in the gun is counted as moving at 100mph along with the truck.
You can not move forward "at the speed of light".
If you are moving forward at say, 90% the speed of light, and fire a a laser (which "shoots" at the speed of light), the laser would appear from your perspective to travel away from you at the speed of light.
However, someone who is at rest relative to you would see the laser as moving away from them at only the speed of light, not 190% the speed of light.
This isn't a paradox because of the way time and lengths are altered by the relative speeds. The distance you see the laser travel relative to yourself over a given time is greater than the distance the observer at rest sees the laser travel relative to you.
assuming nothing gets in the way, the ball and the car will move apart from each other at 200 mph total, so no, it wouldn't stay in the car.
but to someone not in the car, the ball would be stationary. or with gravity would see it fall straight towards the Earth.
no. it's speed relative to the car would still be 100mph. it's speed relative to the earth would be 0mph. it would appear to drop straight down, disregarding the wake of the car and cross winds and such.
JulesMaximus
No Lifer
- Jul 3, 2003
- 74,586
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