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//Question1
//Define Variables
var onem, onex, oney, onez
//Assigns Random Integers
onem = (Math.floor(Math.random()*10)+1)*5;
do {
onex = Math.floor(Math.random()*10)+1 - Math.floor(Math.random()*10)+1;
oney = Math.floor(Math.random()*10)+1 - Math.floor(Math.random()*10)+1;
onez = Math.floor(Math.random()*10)+1 - Math.floor(Math.random()*10)+1;
}
while (onex == 0 || oney == 0 || onez == 0);
//find momentum
onepx = onem*onex;
onepy = onem*oney;
onepz = onem*onez;
onepx1 = onem*-onex;
onepy1 = onem*oney;
onepz1 = onem*-onez;
onepx2 = onem*onex;
onepy2 = onem*-oney;
onepz2 = onem*onez;
onepx3 = onem*-onex;
onepy3 = onem*-oney;
onepz3 = onem*-onez;
//Answer Choices
onecorrectanswer = "<" + onepx.toString() + "," + onepy.toString() + "," + onepz.toString() + "> N-s"
oneanswer1 = "<" + onepx1.toString() + "," + onepy1.toString() + "," + onepz1.toString() + "> N-s"
oneanswer2 = "<" + onepx2.toString() + "," + onepy2.toString() + "," + onepz2.toString() + "> N-s"
oneanswer3 = "<" + onepx3.toString() + "," + onepy3.toString() + "," + onepz3.toString() + "> N-s"
//Place Answer Choices into Array
oneanswerchoices = [oneanswer1, oneanswer2, oneanswer3, onecorrectanswer];
//Randomize Answer Choices
do {
var indexa = Math.floor(Math.random()*oneanswerchoices.length);
var indexb = Math.floor(Math.random()*oneanswerchoices.length);
}
while (indexb == indexa);
do {
var indexc = Math.floor(Math.random()*oneanswerchoices.length);
}
while (indexc == indexa || indexc == indexb);
do {
var indexd = Math.floor(Math.random()*oneanswerchoices.length);
}
while (indexd == indexa || indexd == indexb ||
indexd == indexc);
onea = oneanswerchoices[indexa];
oneb = oneanswerchoices[indexb];
onec = oneanswerchoices[indexc];
oned = oneanswerchoices[indexd];
if (indexa == 3) {
onecorrectchoice = "a"
}
if (indexb == 3) {
onecorrectchoice = "b"
}
if (indexc == 3) {
onecorrectchoice = "c"
}
if (indexd == 3) {
onecorrectchoice = "d"
}
//Qeustion 1 Question
question1 = "1. A " + onem.toString() + " kg object has a velocity of v = <" + onex.toString() + "," + oney.toString() + "," + onez.toString() + "> m/s. Find the object's momentum."
//Question2
//Define Variables
var twovi, twovf
//Assigns Random Integers
twovi = (Math.floor(Math.random()*5)+5)*5;
twovf = twovi - 5;
//find e
twoe = twovf/twovi;
twoe1 = twovi/twovf;
twoe2 = 1;
twoe3 = 0;
//Answer Choices
twocorrectanswer = twoe.toFixed(3).replace(/\.?0+$/,"").toString()
twoanswer1 = twoe1.toFixed(3).replace(/\.?0+$/,"").toString()
twoanswer2 = twoe2.toString()
twoanswer3 = twoe3.toString()
//Place Answer Choices into Array
twoanswerchoices = [twoanswer1, twoanswer2, twoanswer3, twocorrectanswer];
//Randomize Answer Choices
do {
var indexa = Math.floor(Math.random()*twoanswerchoices.length);
var indexb = Math.floor(Math.random()*twoanswerchoices.length);
}
while (indexb == indexa);
do {
var indexc = Math.floor(Math.random()*twoanswerchoices.length);
}
while (indexc == indexa || indexc == indexb);
do {
var indexd = Math.floor(Math.random()*twoanswerchoices.length);
}
while (indexd == indexa || indexd == indexb ||
indexd == indexc);
twoa = twoanswerchoices[indexa];
twob = twoanswerchoices[indexb];
twoc = twoanswerchoices[indexc];
twod = twoanswerchoices[indexd];
if (indexa == 3) {
twocorrectchoice = "a"
}
if (indexb == 3) {
twocorrectchoice = "b"
}
if (indexc == 3) {
twocorrectchoice = "c"
}
if (indexd == 3) {
twocorrectchoice = "d"
}
//Question 2 Question
question2 = "2. A pool ball has a mass of 500 grams and is traveling at a rate of " + twovi.toString() + " m/s when it hits a wall. When it bounces off the wall it has a rate of " + twovf.toString() + " m/s. Find the coefficient of restitution."
//Question3
//Define Variables
var threem1, threem2, threev1, threev2
//Assigns Random Integers
threem1 = (Math.floor(Math.random()*5)+5)*5;
threem2 = (Math.floor(Math.random()*5)+5)*5;
threev1 = (Math.floor(Math.random()*3)+1)*5;
threev2 = -((Math.floor(Math.random()*3)+1)*5);
//find threevprime
threevprime = (threem1*threev1+threem2*threev2)/(threem1+threem2);
threevprime1 = (threem1*threev1-threem2*threev2)/(threem1+threem2);
threevprime2 = (-threem1*threev1+threem2*threev2)/(threem1+threem2);
threevprime3 = (-threem1*threev1+-threem2*threev2)/(threem1+threem2);
//Answer Choices
threecorrectanswer = threevprime.toFixed(3).replace(/\.?0+$/,"").toString() + " m/s"
threeanswer1 = threevprime1.toFixed(3).replace(/\.?0+$/,"").toString() + " m/s"
threeanswer2 = threevprime2.toFixed(3).replace(/\.?0+$/,"").toString() + " m/s"
threeanswer3 = threevprime3.toFixed(3).replace(/\.?0+$/,"").toString() + " m/s"
//Place Answer Choices into Array
threeanswerchoices = [threeanswer1, threeanswer2, threeanswer3, threecorrectanswer];
//Randomize Answer Choices
do {
var indexa = Math.floor(Math.random()*twoanswerchoices.length);
var indexb = Math.floor(Math.random()*twoanswerchoices.length);
}
while (indexb == indexa);
do {
var indexc = Math.floor(Math.random()*twoanswerchoices.length);
}
while (indexc == indexa || indexc == indexb);
do {
var indexd = Math.floor(Math.random()*twoanswerchoices.length);
}
while (indexd == indexa || indexd == indexb ||
indexd == indexc);
threea = threeanswerchoices[indexa];
threeb = threeanswerchoices[indexb];
threec = threeanswerchoices[indexc];
threed = threeanswerchoices[indexd];
if (indexa == 3) {
threecorrectchoice = "a"
}
if (indexb == 3) {
threecorrectchoice = "b"
}
if (indexc == 3) {
threecorrectchoice = "c"
}
if (indexd == 3) {
threecorrectchoice = "d"
}
//Question 3 Question
question3 = "3. A " + threem1.toString() + " kg block is traveling at a rate of " + threev1.toString() + " m/s to the right, when it collides with a " + threem2.toString() + " kg block traveling at a rate of " + -threev2.toString() + " m/s to the left. Determine the final velocity if system is perfectly inelastic. (+ Velocity is to the right)"
//Question Slides
const myQuestions = [
{
question: question1,
answers: {
a: onea,
b: oneb,
c: onec,
d: oned
},
correctAnswer: onecorrectchoice
},
{
question: question2,
answers: {
a: twoa,
b: twob,
c: twoc,
d: twod
},
correctAnswer: twocorrectchoice
},
{
question: question3,
answers: {
a: threea,
b: threeb,
c: threec,
d: threed
},
correctAnswer: threecorrectchoice
}
];
function buildQuiz() {
// we'll need a place to store the HTML output
const output = [];
// for each question...
myQuestions.forEach((currentQuestion, questionNumber) => {
// we'll want to store the list of answer choices
const answers = [];
// and for each available answer...
for (letter in currentQuestion.answers) {
// ...add an HTML radio button
answers.push(
``
);
}
// add this question and its answers to the output
output.push(
`
${currentQuestion.question}
${answers.join("")}
`
);
});
// finally combine our output list into one string of HTML and put it on the page
quizContainer.innerHTML = output.join("");
}
function showResults() {
// gather answer containers from our quiz
const answerContainers = quizContainer.querySelectorAll(".answers");
// keep track of user's answers
let numCorrect = 0;
// for each question...
myQuestions.forEach((currentQuestion, questionNumber) => {
// find selected answer
const answerContainer = answerContainers[questionNumber];
const selector = `input[name=question${questionNumber}]:checked`;
const userAnswer = (answerContainer.querySelector(selector) || {}).value;
// if answer is correct
if (userAnswer === currentQuestion.correctAnswer) {
// add to the number of correct answers
numCorrect++;
// color the answers green
answerContainers[questionNumber].style.color = "green";
} else {
// if answer is wrong or blank
// color the answers red
answerContainers[questionNumber].style.color = "red";
}
});
// show number of correct answers out of total
resultsContainer.innerHTML = `${numCorrect} out of ${myQuestions.length}`;
}
function showSlide(n) {
slides[currentSlide].classList.remove("active-slide");
slides[n].classList.add("active-slide");
currentSlide = n;
if (currentSlide === 0) {
previousButton.style.display = "none";
} else {
previousButton.style.display = "inline-block";
}
if (currentSlide === slides.length - 1) {
nextButton.style.display = "none";
submitButton.style.display = "inline-block";
} else {
nextButton.style.display = "inline-block";
submitButton.style.display = "inline-block";
}
}
function showNextSlide() {
showSlide(currentSlide + 1);
}
function showPreviousSlide() {
showSlide(currentSlide - 1);
}
const quizContainer = document.getElementById("quiz");
const resultsContainer = document.getElementById("results");
const submitButton = document.getElementById("submit");
// display quiz right away
buildQuiz();
const previousButton = document.getElementById("previous");
const nextButton = document.getElementById("next");
const slides = document.querySelectorAll(".slide");
let currentSlide = 0;
showSlide(0);
// on submit, show results
submitButton.addEventListener("click", showResults);
previousButton.addEventListener("click", showPreviousSlide);
nextButton.addEventListener("click", showNextSlide);
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