A bus accelerates from rest at 2 m/s2 for 20 seconds along a straight road. It then moves at a constant speed for half an hour. It then decelerates uniformly to a stop in 20 seconds. Find the total distance covered by the bus.
Answers
[tex]<!DOCTYPE html>
<html>
<head>
<style>
body{
background-color:rgb(150,150,150);
margin-top:100px;
margin-left:5%;
margin-right:5%;
}
pre{
font-weight:bold;
}
.large1{
color:white;
padding:10px 15px 10px 15px;
border-radius:20px 0 0 5px ;
text-decoration:none;
font-weight:bold;
}
.large2{
color:white;
padding:10px 15px 10px 15px;
border-radius:0 20px 5px 0;
text-decoration:none;
font-weight:bold;
}
.small{
color:black;
border-radius:7px 7px 0 0;
padding:11px 7px 10px 7px;
text-decoration:none;
font-weight:bolder;
font-family:Verdana;
}
@-webkit-keyframes whitePulse
{
from{background-color:white;-webkit-box-shadow:0 0 30px #333;}
50%{background-color:#faebd7;-webkit-box-shadow:0 0 70px #faebd7;}
to{background-color:white;-webkit-box-shadow:0 0 50px #333;}
}
@-webkit-keyframes redPulse
{
from{background-color:red;-webkit-box-shadow:0 0 18px #333;}
50%{background-color:rgb(255,38,38);-webkit-box-shadow:0 0 70px rgb(255,38,38);}
to{background-color:red;-webkit-box-shadow:0 0 18px #333;}
}
@-webkit-keyframes bluePulse
{
from{background-color:blue;-webkit-box-shadow:0 0 30px #333;}
50%{background-color:rgb(21,21,255);-webkit-box-shadow:0 0 150px rgb(10,10,255);}
to{background-color:blue;-webkit-box-shadow:0 0 50px #333;}
}
.white.button{
-webkit-animation-name:whitePulse;
-webkit-animation-duration:0.2s;
-webkit-animation-iteration-count:infinite;
}
.red.button{
-webkit-animation-name:redPulse;
-webkit-animation-duration:0.3s;
-webkit-animation-iteration-count:infinite;
}
.blue.button{
-webkit-animation-name:bluePulse;
-webkit-animation-duration:0.3s;
-webkit-animation-iteration-count:infinite;
}
</style>
</head>
<body>
<div>
<a class="large1 blue button"> </a><a class="small white button"> POLICE </a><a class="large2 red button"> </a>
</div>
<br>
<br>
<br>
<pre>
</pre>
</body>
</html>[/tex]