Define init-speed and init-angle as program variables. use an initial speed of 1 and an initial angle of pi/4 to start. once your program is running, you should try using different values to see how your animation behaves. note here that we are using an angle specified in radians. since only the initial speed will be specified, you will need to calculate the x and y components of the initial velocity. these may be calculated via init-x-vel = init-speed * cos(init-angle) init-y-vel = init-speed * sin(init-angle)
exercise 2 define the initial horizontal velocity init-x-vel and the initial vertical velocity init-y-vel using the initial speed init-speed and the initial angle init-angle. we define the initial speed and velocity components (horizontal and vertical) as numbers rather than functions because they do not change over time. the rocket experiences a gravitational acceleration in the vertical direction. therefore, the vertical position of the rocket is this function of the time t: vertical position = init-y-vel * t - 1/2 * 0.002 * t * t where init-y-vel is the initial velocity in the vertical direction, and 0.002 is the gravitational acceleration, which is a constant.

Acetic acid  /əˈsiːtɪk/, systematically named  ethanoic acid  /ˌɛθəˈnoʊɪk/, is a colourless liquid  organic compound  with the  chemical formula  ch3cooh (also written as ch3co2h or c2h4o2). when undiluted, it is sometimes called  glacial acetic acid.  vinegar  is no less than 4% acetic acid by volume, making acetic acid the main component of vinegar apart from water. acetic acid has a distinctive sour taste and pungent smell. in addition to household vinegar, it is mainly produced as a precursor to  polyvinyl acetate  and  cellulose acetate. it is classified as a  weak acid  since it only partially  dissociates  in solution, but concentrated acetic acid is corrosive and can attack the skin.acetic acidnamespreferred iupac nameacetic acidsystematic iupac nameethanoic acidother namesvinegar (when dilute); hydrogen acetate; methanecarboxylic acid[1][2]identifierscas number64-19-7  3d model (jsmol)interactive image3dmetb00009 reference506007chebichebi: 15366  chemblchembl539  chemspider171  drugbankdb03166  echa infocard100.000.528ec number200-580-7e numbere260  (preservatives)gmelin reference1380iuphar/bps1058keggd00010  meshacetic+acidpubchem  cid176rtecs numberaf1225000uniiq40q9n063p  un number2789inchiinchi=1s/c2h4o2/c1-2(3)4/h1h3,(h,3,4)  key:   qtbsbxvteameqo-uhfffaoysa-n  smilescc(o)=o