# Journey Physics Class -Pieces

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• I don't know sir. May I find the answer? Uhmm. Speed I'm not sure.
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• ﻿ (1) A shell is fired from the ground with an initial speed of 1700 m/s @ an initial angle of 55.0 to horizontal of 2.77 x 105 m. What is the total time of the shell traveling?
•     Josefina comforts Simone.
• Exactly, indeed. Now, with the X-component's characteristics are  (a) goes in a horizontal direction and (b) has a constant velocity however it is NOT accelerated by gravity and (c) the only formula used is dx=vxt.  Remember to diagram and label your things accurately. Now,  onto a few examples.
• Don't be such﻿ a debbie downer. This is my most favorite class of the day. Science an Math is awesome together.
• You have to learn when enough is enough. I'm out! I'm going back to class my break is up.
• We'll throw in some practice in a few, but before we go further let's pick up the Y-component next to the first depiction . The "Y-component" (a) is the constant acceleration and (b) the acceleration is due to gravity.
• Mr. Green draw the diagram.
• Where is that book?﻿﻿ What's going on over there?
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• It must slow down or have a change of direction from which it's starting point.
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• Is that so? Says the one without a date last year at Prom. Let me guess Caspar the friendly Ghost.
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• ﻿V1 = 1700 m/s﻿
• ﻿55﻿
•                          David  Green                          10/8/18                            3rd Period Physics Notes 101: Projectile Motion ﻿1)  A shell is fired from the ground with an initial speed of 1700 m/s  @ 55 degree angle to the horizontal of 2.77 x 105 m. What is the total tome of the shell traveling?
• ﻿R= 2.77 x 10﻿5
•   ﻿tt =?     tr =   -viy / g   = -1392 / -9.8 =142 s
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