# physics comic book

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• hey can you come over i need help in physics?﻿
• i need help with velocity, vectors,conversions, sig. figs., etc..﻿
• meet up at the cafe﻿
• hey can you come over i need help in physics?﻿
• yea sure where you want to meet up at?﻿
• alright ill be there but what exactly do you need help on?﻿
• ﻿There are 5 rules 1. all non zeros are significant  2. zeros between non-zero numbers are sig. 3.﻿ zeros left of the first non-zero is not sig. 4. zeros at the end and to the right of the decimal are sig.  5. zeros at the end but are  to the left of the decimal may or may not be sig.
• ﻿I don't understand Sig. Figs.
• How many sig. figs. are in 9.354cm? ﻿﻿
• Sig. Figs.﻿
• 4 sig. figs.
• ﻿No problem i knew you would get it.
• ﻿i think i understand it now thanks  i still got these other topics im struggling on can you help with them?
• um i might let me think. Let's try this problem
• Do you remember how to do vectors?﻿
• yes, don't you use cos and sin for this problem?
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• ﻿
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• yeah you do﻿
• horizontal component cos 40^ = v/80 m/s﻿
• vertical component sin 40^ = vy/ 80 m/s vy  (80 m/s)(sin 40)=51.44 m/s
• Vectors Worksheet
• yeah lets go!!!!
• ﻿i think i get it now but can we go somewhere else its too loud?
• ﻿we can wait here for the bus instead.
• ﻿when we get to our next destination we can talk about velocity yayy!!
• Finally made it to the library! Peace and quiet. I need to get these physics formulas figured for the test tomorrow!﻿
• A sports car is traveling at a constant velocity v=5.0 m/s. The driver steps on the gas and the car accelerates forward. After 10.0 seconds, the driver stops accelerating and maintains a constant velocity v=25.0 m/s. What is the cars acceleration?﻿
• Here is an acceleration problem. ﻿The formula is Vf-Vi /time.
• a= Vf-Vi/time a=25.0 m/s - 5.00m/s ﻿ 10.0 s a= 2 m/s^2 forward is the direction because the number is positive.
• What is velocity? ﻿Velocity is a physical vector quantity; both magnitude and direction are needed to define it.
• Okay, got it!﻿ So there is a direction and magnitude!
• The the distance and the direction, like north west and south east, right?
• ﻿Yes , that is right!
• Can we talk about conversions ?﻿
• Like what types of conversions?﻿
• Like what type of measurement is larger or smaller! So like this, which is larger 500 mm or 5 meters?﻿
• So 1 meter equals a 1000 mm. so 500 mm = 0.5 meters which is less that 5 meters so 5 meters is larger. ﻿
• So this is an example of yards and 3 feet equals one yard. So  if a football field is ﻿100 yards, then it equals 300 feet, right? Because i take 3 feet and multiply by 100 yards and you get 300 feet. Okay I think I am getting this figured out. Thanks.
• So how about another type of conversion?﻿
• ﻿How many hours are in 2 days?  Okay so first how many hours are in one day? Thinking 24 hours. So then you multiply that by 2 days and you get the answer.....
• ﻿Ok I think velocity is gonna be on the test too. What is that formula? d=v * t
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