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Atoms and Energy: The Energy of Motion
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<font color="#FFFFFF" face="Verdana, Arial, Helvetica, sans-serif" size="5"><strong>Nuclear:</strong>
An Introduction to Nuclear Reactions</font>
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<font face="Verdana, Arial, Helvetica, sans-serif" size="4">The <b>kinetic
energy </b>of an object is the energy it possesses due to its <b>motion</b>.
The faster an object moves, the higher kinetic energy it has (see <a href="script:page:0:message <t><font face=Verdana>The kinetic energy of an object with mass <i>m</i>, moving with speed <i>v</i>,<br>is defined as:<br> <center><i>E=mv<sup>2</sup>/2</i></center></font></t>;">the
formula</a></font><font color="gray" face="Verdana, Arial, Helvetica, sans-serif" size="4">❏</font><font face="Verdana, Arial, Helvetica, sans-serif" size="4">).</font>
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The amount of kinetic energy (energy of motion) an object has can be
measured by the amount of work it can do by exerting a force on another
object. For example, in the experiment on the right, we will try to knock
a heavy ball (right) off a table using a light ball (left).<br><br><b>What
you need to do:</b>
<ul>
<li>
Set the speed of the gray ball by adjusting the slider.
</li>
<li>
Click run.
</li>
<li>
Click reset and try different speeds.
</li>
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<font face="Arial, Helvetica, sans-serif" size="4"><strong>The faster the
ball on the left moved the kinetic energy of the ball....</strong></font>
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<font face="Arial, Helvetica, sans-serif" size="4"><strong>The kinetic
energy is related to both an object's speed and its mass. Predict what
would happen to the kinetic energy if the ball on the left were twice its
current mass but the speed of the ball remains the same.</strong></font>
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