The final momentum would be, the mass into the final velocity, minus, the initial
#Physics umpulse equation maker how to
Because we know how to calculate momentum, all that it has given, so Go ahead, see what theįinal momentum would be, what the initial momentum is, subtract and see whatĪnswer you end up with. In momentum would be the final momentum, which I'll call as PF minus the initial momentum. And how do you calculate that? Well, change is always calculated as final value minus the It goes from 20 to zero, so it's momentum must alsoĬhange and we need to calculate how much that momentum has changed. Goes and hits the wall it's velocity changes, right? Object, multiply by it's velocity and that number is called, the momentum. In a previous video called Intro to Momentum, and the basic idea is, we calculate momentum as the We need to think about is what is momentum? Well we're talked about this The change in momentum and so I think the first thing The force exerted, we'll talk about that a little bit later but we have to calculate What is asked? We need to find the change in it's momentum and we have to calculate Okay, now let's think about what is asked. 1 second for it to stop, for it to go from 20 to zero. So we also know that it's final velocity is zero. It's final velocity is zero because it's no longer moving, We usually call that the initial velocity and we usually use the letter U for that, so the initial velocity U 5 kilograms, we know the speed of thatĬlay, before it hits the wall. Alright, so before we go ahead, let's quickly write downĪll this data in one place. Have it written over here but we also know that it takes Hitting, it's no longer moving it's stuck to it, so we know it's at rest and we also know, which I We know it hits the wall and sticks to it, it stops, so that means after So it's initial speed, before hitting the wall, we know that it's 20 meters per second. 5 kilograms so we know it's mass, we know it's coming in at 20 meters per second Okay, let's see what's, whatĪre the data given to us. So let's first draw the diagram for that. That's moving at some speed, it hits the wall and comes to a stop. Okay, so, what's given? What's going on? So we have a ball of clay Okay, so what do we do? Well first we'll try to thinkĪbout what's given to us, maybe we'll draw a diagram, then we'll write down all the data, think about what is asked, and then think about how to solve it. Find the change in it's momentum and the force exerted by the wall on it. 5 kilograms ball of clay moving at 20 meters per second hits a wall and stops, sticks to it in.
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