I discussed with my family about this situation. I dont get it
In: Physics
Yes.
Throwing or shooting something from a moving vehicle adds the velocity of the vehicle to the velocity of your throw. Or subtracts it if you are moving in the opposite direction. (If you throw/shoot at an angle to the direction of travel you will have to do vector addition so lets not go into that.)
In practice air resistance will mean that some velocity gets lots from the addition. Holding your had out of a moving car will tell you that the faster you go the more the wind presses against your hand, this will make it harder to throw anything.
For really fast moving vehicles like space-ships and real fast projectiles that move at a significant fraction of the speed of light you will run into trouble again, because it turns out that you can’t really just add velocities like we normally do. However unless your horse is some alien space horse or the gun you shoot a laser or particle cannon that won’t matter.
They said it, but I will add it in. Mythbusters shot a ball at 30mph out of t HB e back of a truck traveling at 30mph. It fell straight to the ground.
It depends on what you measure speed relative too and what direction you firer at.
If you measure the speed relative to the car the bullet will leave the gun and the same speed regardless of the speed of the car. The car and gun move at the same speed.
If you measure the speed of the bullet relative to the ground it depends on the direction you fire. If you fire in the direction of motion the speed of the bullet and the speed of the car are added together. If you fire in the opposite direction the speed of the bullet is subtracted from the speed of the bull.
For how the bullet fly in the air and how it loose speed depends on the speed of the bullet relative to the air. If it no wind the speed relative to the air is the same as relative to the ground but if there is a wound have to add and subtract it to.
A simple way to think of how speed is relative is if you are on a train and throw a ball to a friend the ball will behave the same if you move or is stationary. But for someone that stands on the ground beside the train the ball move as fast as the train before you throw it. If you throw it in the direction you move it has to move faster than the train relative to the ground else it would not catch up to your friend. If you throw it the other direction is as to move slower so your friend catches up to it.
Yes, they are moving faster. As for the “why”, its a case of adding energy. The explosion that propels a bullet adds a certain amount of kinetic energy to the bullet. If its already moving, that kinetic energy is added on top of the energy it already has, resulting in a higher total energy and faster speed.
Note, however, that someone in the car wouldn’t *see* the bullet go faster, because they themselves are moving in the same direction as bullet.
(Also, this is all assuming you fired the bullet in the same direction the car is driving. If you fired it backwards, the bullet would actually move slower because it has to first cancel the kinetic energy pushing it forwards)
You can add both speeds of the car and bullet together. The bullet moves faster if you aren’t in the car or on the horse.
Since the driver and the bullet are both moving in the same direction, they are slower relative to themselves.
Imagine two planes going side by side. You can see your friend in the other plane. You aren’t moving forwards or backwards, but you’re both going hundreds of miles per hour, but relative to each other, you’re stationary, going 0 miles per hour. Your mom on the ground sees your plane going the hundreds of miles per hour. If she walks away from you, you’re essentially going faster relative to her.
Let me know if that helped.
Yes. WHen you shoot an arrow or a gun, the bulllet or arrow gets sent forward at a certain speed, say a hundred miles an hour, just to keep it simple. If you are riding or driving forward at, say 20 miles per hour, the bullet will be going 100 mph relative to you, but 120 mph relative to the ground. It also works in reverse: shoot backward and the bullet will still be going 100 mph relative to you but only 80 mph relative to the ground.
You will get to learn all about it when you study vector addition in math class.
In our frame of standing still and watching the situation, yes they will be faster. In the frame of the shooter, we imagine the shooter being at rest and the environment travelling around him. From his frame the arrow or bullet will have its usual velocity, but from our point of view we also take into account the velocity of the shooters frame moving with respect to ours. So in our frame, the bullet or arrow will have higher velocity!
Yes, this is true for nearly every thing….except light. Light will never go faster just because you’re moving. It’s weird, but it’s the truth.
Keep in mind that the earth on which you are standing **is moving** from west to east at a high speed. If you shot a gun and the bullet’s speed was independent on the vehicle’s speed (the earth in this case), that would mean that the bullet would travel at a different speed depending on whether you’d shoot towards the east or towards the west, which is obviously not the case.
If you’re on a bus moving at 40mph and you walk towards the front of the bus at 2mph, you’re going forward 2mph faster than everyone else on the bus until you stop.
Same principle for bullets, but faster.
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