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Suppose you drop a block of wood from some height you notice that as it falls The block approaches the ground faster and faster is the velocity of the block consist...

Question

Suppose you drop a block of wood from some height you notice that as it falls The block approaches the ground faster and faster is the velocity of the block consistent explain why or why not

suppose you drop a block of wood from some height you notice that as it falls The block approaches the ground faster and faster is the velocity of the block consistent explain why or why not



Answers

Which one falls faster when dropped, a block of wood or a block of iron having the same size (neglect air resistance)?

You hear, momentum is conserved and we can say that this big it is because we have their shot at equal speeds of block of what? On a smooth ice drink. So essentially, the frictional force between the ice rink and the block of wood is essentially zero. And so we know that, uh, we can say that the the momentum of block plus bullet after, uh, collision, of course equals that before collision. And we can say that then, if the law of contribution momentum applies, we can say that, uh, the rubber, Well, it has a negative momentum after impact. And we can say that with this And this would be, of course, with respect to the block. So the blocks momentum must be greater is greater after impact. That is the end of the solution. Thank you for one

For this problem, on the topic of momentum and collisions, we have to consider a ballistic pendulum in which a bullet strikes a block of wood. If the wooden block is hanging from the ceiling and swings to its maximum height after the bullet strikes it and becomes embedded in it, we want to know that if the bullet is the same with the same initial speed and the same block, if the maximum height will change if the bullet did not get stopped by the block, I'd rather pass through to the other side. We also want to know the high change if the bulletin speed again remained the same, but the block was made of steel and the bullet ricocheted directly backwards rather than embedding itself in the block. If the bullet passes through the block, then the bullet carries momentum with it. Since momentum is conserved, the block now has less momentum than it did when the bullet remained lodged in the block, in which case it is part of all of its momentum to the block. If the block has less momentum, then its maximum height is therefore reduced. Now, in contrast, if the bullet ricochets off the block bounces back, then the maximum height of the block is now increased. This is again because momentum is conserved and the block now has the momentum equal to the initial momentum of the block, plus an additional momentum equal in magnitude to the bullets final momentum.

Hello and welcome to this video solution of liberate. There were given a block but it's fixed to the city and you have actually fired a bullet through it. What will happen? It simply, it will move to a height age, right? And if you see here, what will happen is if the bullet is moving with a velocity be then it will aboard the system. We have a velocity of G. F. Which is actually higher than uh not actually lower than this velocity V. Or in case of bullet and it will rise to a height, lets the age evolve its initial point. So where it will gain the potential and actually, and this is the case when let's say the bullet is being embedded inside the block, then it attend this side age. Now it is, it is said that you have the same bullet, same initial bullets but in the same block, would that maximum height of the block change if the bullet did not get stopped by the block? So let's say the bullet moved out of the block. Right? That means look what would happen now. The initial Grant can achieve the bullet is having the square. That is anyways constant rate because mars and velocity is constant now if it is moving out of this block and then it will have an additional velocity let's say to you. So this height will be reduced obviously because a portion of the energy is moving out of it. The whole energy cannot be is not transferred into this bullet block system. So first but we have got the heightened age will reduce as this will you do that as you can say that the bullet will obviously have started velocity after moving out of this block. So the total kinetic energy that is initially present initially present will not be transferred completely into this bullet block system. So it will reduce this part one and there is another part to it. Now would the height changing the bullet and its speed were the same. But the block was still and the bullet bounced of it directly backwards. Yes in this case what will happen let's say the bullet is moving with velocity V. And after striking it it will it will have certain velocity. Let's say right? That means the changing moment on the bullet is delta B. Will be equal to m free minus of minus and you're right which is equal group and replacing at this moment will be transferred into this block now. So initially if you see the initial movement um when this bullet code embedded into the block was envy rate envy. Now it has increased to M. V. Blessing obviously. Now the velocity V. F. Will increase of this block. Right? So since if he increases, the height is going to increase, so it will move of the tire, right? So we can say H is increased. I hope this is clear to you and have a very good start today. Thank you.

Considered two cases, the first in which the ball rolls off with a fast, larger horizontal speed off the table on the second, in which it rolls off with a smaller speed. No, both off them take the same amount of time to hit the ground. But of course, speech means both off them, getting the same amount off vertical velocity when they're falling to the ground. So there were tickle components of velocities are to see, but obviously their hearts and incompetence, which are which remain unchanged you to gravity remain the same as they were at the top. So now, indeed, the red ball. We'll simply have the larger horizontal component comfort to the blue ball, which means the total speed of the red balls will be larger than the total speed of the ruble. That is it. If it if a ball rooms are faster on the table, it'll how largest speed when it is


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