the velocity of a object changes from 20 m/s to 60m/s in 10 s.
what is the change in velocity of the object
Answers
[text]<!DOCTYPE html>
<html lang="en">
<head>
<title>CUBE</title>
</head>
<body>
<div class="container">
<div id="cube">
<div class="front">1</div>
<div class="back">2</div>
<div class="right">3</div>
<div class="left">4</div>
<div class="top">5</div>
<div class="bottom">6</div>
</div>
</div>
<style>
body {
padding-left: 30%;
padding-top: 5%;
}
.container {
width: 200px;
height: 200px;
position: relative;
-webkit-perspective: 1000px;
-moz-perspective: 1000px;
}
#cube {
width: 100%;
height: 100%;
position: absolute;
-webkit-transform-style: preserve-3d;
-webkit-animation: rotatecube 10s infinite;
-moz-transform-style: preserve-3d;
-moz-animation: rotatecube 10s infinite;
}
#cube div {
width: 200px;
height: 200px;
display: block;
position: absolute;
border: none;
line-height: 200px;
text-align: center;
font-size: 50px;
font-weight: bold;
}
@-webkit-keyframes rotatecube {
0% { -webkit-transform: rotateX(0deg) rotateY(360deg) rotateZ(90deg); }25% { -webkit-transform: rotateX(90deg) rotateY(270deg) rotateZ(180deg); }
50% { -webkit-transform: rotateX(180deg) rotateY(180deg) rotateZ(0deg); }
75% { -webkit-transform: rotateX(270deg) rotateY(90deg) rotateZ(360deg); }
100% { -webkit-transform: rotateX(360deg) rotateY(0deg) rotateZ(270deg); }
}
@-moz-keyframes rotatecube {
0% { -moz-transform: rotateX(0deg) rotateY(360deg) rotateZ(90deg); }
25% { -moz-transform: rotateX(90deg) rotateY(270deg) rotateZ(180deg); }
50% { -moz-transform: rotateX(180deg) rotateY(180deg) rotateZ(0deg); }
75% { -moz-transform: rotateX(270deg) rotateY(90deg) rotateZ(360deg); }
100% { -moz-transform: rotateX(360deg) rotateY(0deg) rotateZ(270deg); }
}
.front {
background: rgba(255,0,0,.5);
}
.back {
background: rgba(0,255,0,.5);
}
.right {
background: rgba(0,0,255,.5);
}
.left {
background: rgba(0,255,255,.5);
}
.top {
background: rgba(255,0,255,.5);
}
.bottom {
background: rgba(255,255,0,.5);
}
#cube .front {
-webkit-transform
answer:
4m/s/s or 4m/s^2
Explanation:
v(i)= 20m/s
v(o)= 60m/s
change in velocity= 40m/s
acceleration: measure of the change of velocity
acceleration=change in velocity/ time
=40m/s/10s
= 4m/s/s