Question 22 (2 points) Uxenwhich of the following situations is energy not being conserved?A person catches their Jacket on a loose nail and the jacket rips: A chil...

a) If you jump off a table onto the floor, is your mechanical energy conserved? If not, where does it go? b) A car moving down the road smashes into a tree. Is the mechanical energy of the car conserved? If not, where does it go?

This question is a pure political type of question where we don't have to get great anything just to have toe put our thoughts. So basically there are different decision and that we have to. So if you want So in the first part you can say that the glowing in birth Egypt I can fire the heat energy so we can say the glow being clothing embers in a camp fire had hate energy eating algae, which is non mechanical in nature and vintage, depending non mechanical on employment. Mechanical hope you stand in nature and actually members have chemical energy which is converted into hit light will burn out. Onda we all did. You know that when actually and bus have some chemical energy and converted to heat light when it won out in the next part? We're reaching a different class so, so chaotic, so strong Wind hides kinetic energy. It is strong wind has kinetic Yeah, you know the It's a mechanical. All the molecule are moving off some final speed. Did you allows the person in the temperature at different places High in law professor regions are generated and that colleges wind to blow. Actually Now I'm going back to the next spot. Yeah, we have this question. We can say that. Yeah, mostly in this part. Swing pendulum has Baltimore obviously a sweet swing. Getting pendulum happened to lamb hodge, Mort potential energy and kind of taking energy. People actually buy because you know that the pendulum soon and we have obviously have some height and as well, some speed. So we can say that they have both mechanical importance in energy way. Always consider art, uh, our services, your potential. So that's the end in the next part of this question in this part, we can say that. Okay, so let me say about this one. So the person sitting on matters has potential energy, a person person sitting on a matter matter, sitting, sitting on air. Matt, this has Putin cylinders mechanical, and the matters will have elastic parents in energy and mattress have elastic, elastic potential energy. Because this is obviously the reports acted by the person on the justice. So that's why they have elastic port until in a g. And now moving back the next part off this question? No. So this part a rocket being launched into space we'll have both parenting and parents. Energy, obviously. Look it. Okay. Being lance ter into space, we'll have. We'll have both. Can I take energy and Putin sellers? Obviously, they have some speed initially and some height as well. And we are always changing surfaces. Your potential. So that's why, okay.

In this problem we have given if a non conservative force acts on an object and does work, then the object is kinetic energy is canceled, potential energy is conserved. Mechanical energy is conserved or mechanical energy is not conserved. So you know that if yeah, sure, a non conservative force X. On any object, we know that mechanical energy. Mechanical energy is not conserved is not concert. That means, do you know that mechanical energy is a call to kinetic energy plus potential energy. That means mechanical energy is not conserved. So our option D will be the correct option that if there are non conservative forces acting on any object, then we can say mechanical energy is not yeah, conserved. Straight. Yeah. Mhm.

In this problem on the topic of energy conservation, We want to know if energy is conserved when you jump off a table onto the floor and if not, we want to know where it goes. For the second part, we're told that a car is moving down the road when it smashes into a tree again, we want to know if mechanical energy is conserved and if not, where does it go now? First leave a person jumps off the table onto the floor. Mechanical energy is not conserved for the fall. The mechanical energy is conserved as potential energy, gravitational potential energy, to be more specific, is being converted to kinetic energy. However, once the person lands on the floor, all of the kinetic energy is absorbed by the body on impact. The energies that lost to non conservative forces such as friction within your body and heat that is expelled by our muscles. For part B the car cars, mechanical energy is not conserved as well. If a car is on a level plane, it has no gravitational potential energy. The only energy is in the form of kinetic energy, which is lost to non conservative forces, such as friction on the tires, thermal energy by the car's brakes and energy dissipated as the car car's body is distorted by the tree.

The problem we have given mass of object, which is a ball is two kg initially, few days. Initial velocity is minus 20 m per second finalist, 10 m for a second. We have to find the impulse during the goalies and night. So we know that impulse is equal to formula for impulses. Your pulse is a call to change in momentum. That means I am the final minus. We initial masses to Katie. We finally stand minus V initial which is minus 20. So this will be equal to 60 Newton's second. This is a call to the impulse during the collision. Now we will check. Option is 10 Newton second base 20 Newton second C is 39 seconds and he is 16. Neutral second. So Option B is correct. Thank you.