Thought I needed a guardian to aid with Physics: principles with Applications, however this helps a many more.

You are watching: A fire hose held near the ground shoots water at a speed of 6.5 m/s

Hazel I.

April 4, 2021

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### Video Transcript

we require to uncover the angle of start we have actually of the early stage equaling six point five meters per second. We recognize that Delta Y zero so we can use the variety equation and also we know that ours the variety is two suggest five meters. For this reason we have the right to say that our equals the early stage squared times sign of this Ada separated by G. And also so we can say the Seita is walking to it is in one over to arc dimension of RG over of the initial squared. And so Fada is going come be same Tio one over to arc sine eye two point five, nine suggest eight divided pie six point five squared. And also this is walk to same eighteen levels now if Fada to add if Theda equates to forty five degrees minus some worth gamma, climate Fada amounts to forty 5 degrees, plus part value. Theta will additionally be a solution. So, in fact, Fada is going come be equal to eighteen degrees and also ah, eighteen, eighteen minutes forty five degrees is walking to be twenty seven degrees. For this reason weaken basically said the gamma lower situation gamma is walking to it is in twenty seven degrees twenty seven levels plus forty five degrees this is going to give us seventy two degrees. So these are beer to edge measures. Both of them are valid. And also the inquiry is asking united state to draw their trajectory. For this reason we can say the if us were to draw this out graphically, we deserve to say the this X is walking to be meters and then we have the right to say why right here is going likewise be meters. For this reason this will be her displacement in the white direction displacement in the extraction. We're going to begin with the Ah fairly let's brand or access. So this will be suggest five one one allude five two and also then the ex us have allude five one one point five to two allude five. So at this point, us can uncover Rather will an initial be making use of eighteen levels s. For this reason we have a max height. Ah, little if the total distance, if the complete time is walking to it is in two point five. That means that i reaches the top at one allude two 5 so we can say in ~ one suggest two five, it's going to be around here, and also this angle is going come be, Ah, the eighteen degree angle overcome through and reaches the ground in ~ two allude five meters. Now the other angle the seventy seventy two level angle. This needs to be much steeper and also at one point, yet again, the optimal is got to at one point two 5 seconds and also it's a little under two. Therefore if we want to attract this, we can try, we can say and also then indigenous here. Therefore Okay, so these would be your 2 trajectories. This one would be eighteen degrees. And also this one, the course, would certainly be seventy 2 degrees. The is the finish of the solution. Give thanks to you for watching.