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//Question1
//Define Variables
var onem, onems
//Assigns Random Integers
onew = Math.ceil((Math.floor(Math.random()*45)+75)*9.81);
onewm = onew + 100;
//find mass
onem = onew/9.81;
onem1 = onewm/9.81;
onem2 = onew/32.2*9.81;
onem3 = onewm/32.2*9.81;
//Answer Choices
onecorrectanswer = onem.toFixed(0).replace(/\.?0+$/,"").toString() + " kg";
oneanswer1 = onem1.toFixed(0).replace(/\.?0+$/,"").toString() + " kg";
oneanswer2 = onem2.toFixed(0).replace(/\.?0+$/,"").toString() + " kg";
oneanswer3 = onem3.toFixed(0).replace(/\.?0+$/,"").toString() + " kg";
//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 man is in an elevator. When the elevator is at rest he weighs " + onew.toString() + " N. When the elevator begins to move he weighs " + onewm.toString() + " N. Determine the man's mass."
//Question2
//Define Variables
var twomu, twom, twotheta, twoP
//Assigns Random Integers
twomu = (Math.floor(Math.random()*4)+1)*0.1;
twom = (Math.floor(Math.random()*10)+5)*10;
twotheta = (Math.floor(Math.random()*7)+2)*5;
twoP = (Math.floor(Math.random()*20)+50)*10;
//find acceleration
twoNorm = (twom*9.81) - (twoP*Math.sin(twotheta*Math.PI/180));
twoax = ((twoP*Math.cos(twotheta*Math.PI/180)) - (twomu*twoNorm))/twom;
twoax1 = ((twoP*Math.cos(twotheta*Math.PI/180)) + (twomu*twoNorm))/twom;
twoax2 = ((twoP*Math.cos(twotheta*Math.PI/180)) - (twomu*twoNorm))/twoP;
twoax3 = ((twoP*Math.cos(twotheta*Math.PI/180)) - (twomu*((twom*9.81) + (twoP*Math.sin(twotheta*Math.PI/180)))))/twom;
//Answer Choices
twocorrectanswer = twoax.toFixed(2).replace(/\.?0+$/,"").toString() + " m/s^2"
twoanswer1 = twoax1.toFixed(2).replace(/\.?0+$/,"").toString() + " m/s^2"
twoanswer2 = twoax2.toFixed(2).replace(/\.?0+$/,"").toString() + " m/s^2"
twoanswer3 = twoax3.toFixed(2).replace(/\.?0+$/,"").toString() + " m/s^2"
//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. For a block being pulled along a horizontal surface with a coefficient of friction of " + twomu.toString() + ". If the block has a mass of " + twom.toString() + " kg. Determine the horizontal acceleration of the block shown below if theta = " + twotheta.toString() + " degrees and P = " + twoP.toString() + " N."
//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
}
];
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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