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Matthew L

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i like hockey, basketball, cricket

  • Attachment image

    Optimal angle for projectile motion?

    Im doing a physics project for school on projectile motion and we have to work out the optimal angle. I have done my results and they are all fine. However we also have to calculate the maximum distance that is possible to be achieved without wind resistance. In my calculations the maximum distance occurs at 40 degrees, until I reach an initial velocity of 5.27m/s and then it changes to an optimal angle of 45 degrees. Also im not using any angle in between the two angles. Im using the formula range=ucos(theta) x time of flight, and i worked out to give me an overall equation when I work out the time of flight using the formula x=usin(theta)t - 0.5gt^2 which gives me the overall equation of what I have inserted as an attachment. So what I am asking is have gone wrong somewhere in my calculations or is it just normal to have different optimal angles for different velocities. One last thing is I know in the formula i have inserted is that the gxy should be read as 2gxy however i cancelled it out because of the 0.5 in the distance equation.

    2 AnswersPhysics7 years ago
  • who is the oldest working billionaire currently?

    I want to know who is the oldest billionaire that is still employed and currently working. Also if possible what is the average retirement age for billionaires

    1 AnswerPersonal Finance8 years ago
  • Colour Blindness and Engineering?

    Im in year 11 this year and ive decided I want to do engineering, but while i was searching through the different engineering fields I saw that its not recomended if youre colourblind. I have a very bad case of red-green colourblindness. It doesnt affect me very much at all in day to day life, I dont get anywhere near passing any colour blind test its that bad, when i was tested by an eye doctor person (not sure what they are called) I could only answer 2/ about 30 of the dot questions. Im wondering if I should continue to pursue engineering or change to something else. If so what other fields require maths because im quite good at it and I want to do something that involves it. My year 11 subject for this year are VCE - Method 3/4, Physics 1/2, Chemistry 1/2, English 1/2, Sport and Rec 3/4. if that helps with a different career choice

    3 AnswersEngineering8 years ago
  • If you had one wish what would it be?

    If you had a wish what would it be? Please dont say things that would be impossible to grant like i wish i had a superpower etc, or things a bit more realisitic but still impossible like i want a skyscraper or i wish poverty didnt exist.

    10 AnswersPolls & Surveys9 years ago
  • How do I get over my ex gf?

    I know im only 14 but this is driving me crazy so please help me

    we were going out for about a year until she dumped me a week ago and i just cant get her out of my head. I see her at school everyday but she never talks to me of looks at me anymore. and everytime i look at her i think of all the good times we had which is y i cant get over her so please help

    6 AnswersOther - Family & Relationships1 decade ago
  • Weights: why do sets?

    when you are doing weights why do you have to do sets? why not just do as many as you can? and is reps the number of times you do the certain excersize?

    3 AnswersDiet & Fitness1 decade ago
  • Why do i get a rash on my face when i eat certain foods?

    I always get a rash on my face when i eat things like:

    Tomatoes

    Tomatoe sauce

    some Yoghurts

    dried fruit

    and some others that do it rarely but tomato sauce does it everytime, im just wondering if its an allergy to a chemical in the foods or something

    4 AnswersAllergies1 decade ago
  • what are some good websites to get music?

    Im looking to get some music for my ipod, ive tried looking and all the free websites are really bad and itunes is too expensive so i want a website that has new music and doesnt charge too much and is australian and easy to use

    2 AnswersR&B & Soul1 decade ago
  • I need short story ideas?

    I have to write a short story for a school project it has to be a minimum of 1000 words, I want to keep it simple. I like writing about fantasy and science fiction so anything under them would be good, if u have any other ideas just say them and i will consider them im in year 8 and not a very good writer

    4 AnswersBooks & Authors1 decade ago
  • How many animals are extinct in the wild and only are alive in zoos?

    i need a rough number, i dont want animals that are extinct only ones that are extinct in the wild

    5 AnswersZoology1 decade ago
  • I need help with homework?

    I am doing a speaking test for school, it has to be 3 minutes long, it can be any topic, it has to be an argument one side not both

    can anyone give sergestions

    6 AnswersHomework Help1 decade ago
  • Can someone please trade me a shiny feebas, milotic,magikharp or gyarados?

    i just want 1 of them

    shiny feebas

    shiny milotic

    shiny magikharp

    shiny gyarados

    My friend code is 3566 4546 3404 MATTHEW

    1 AnswerVideo & Online Games1 decade ago
  • whould a crickets stinger kill my frog?

    my frog is about 3 months old its a red eyed green tree frog about 1 inch long and i was woundering when she gets bigger and she has to eat large crickets with the stingers if one of the crickets stings my frog will it kill my frog

    5 AnswersOther - Pets1 decade ago
  • whould a crickets stinger kill my frog?

    my frog is about 3 months old its a red eyed green tree frog about 1 inch long and i was woundering when she gets bigger and she has to eat large crickets with the stingers if one of the crickets stings my frog will it kill my frog

    1 AnswerOther - Pets1 decade ago
  • someone rate my blissey please?

    lvl 100 toxic,softboiled,psycic and substitute (i like have toxic and using substitute)

    ev trained in defence, serene grace ability

    modest nature

    high HP

    very low attack

    average defence

    good sp attack

    really good sp defence

    good speed

    are there any moves i should replace or anything else

    5 AnswersOther - Games & Recreation1 decade ago
  • i need help with dragonite D/P?

    im thinking of breeding a dratini but i want to no if i can breed it with a certain pokemon to make it get special moves i also want to know what stat i should raise and what moves it should have when its lvl 100 and what item it should hold while battling pokemon trainers on wifi and battle tower

    2 AnswersVideo & Online Games1 decade ago
  • Can someone please trade me some shiny pokemon?

    i need some shinys

    my friend code is 3566 4546 3404 MATTHEW

    i have lots of pokemon to trade

    post your name and friend code and which pokemon u have

    3 AnswersVideo & Online Games1 decade ago
  • can someone please rate my pokemon team D/P?

    Salamence 100 hydro pump, dragon pulse, thunder bolt and fly

    Crobat 100 fly cross poison, sluge bomb and poison fang

    shiny lapras 100 ice beam, surf, hydro pump and brine

    rhyperior 100 thunder, hammer arm, earthquake and megahorn

    Electivire 100 giga impact, earthquake, thunder bolt and flamethrower

    Gallade 100 close combat, drain punch, X-scissor and earthquake

    are there any move i should replace

    5 AnswersVideo & Online Games1 decade ago
  • what are the best moves for my salamance in pokemon diamond?

    i have a bagon lvl 26 now and it knows ember hydro pump dragon pulse and bite

    what stat should i raise im currently trying to raise Sp attack but im not sure that is the right stat

    i will probobly use moves that will need sp attack

    i wont to keep the moves hydro pump and dragon pulse

    im thinking of teaching it thunder bolt and fly

    or should i teach it something else

    i really need help

    3 AnswersVideo & Online Games1 decade ago