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%>
<html>
<head>
<title>Reading Quiz: Acceleration and Free Fall</title>
</head>

<body bgcolor="#F4EEEA">
 <h2>
  Reading Quiz: <font color="#800000"><em><span lang="en-us">Acceleration and 
	Free Fall</span></em></font>
 </h2>
	<p>
  <span lang="en-us">Answers must be submitted by 8am Friday, Dec 7th. </span>
 </p>

<!-- 
 <p>
  <font size="4" color="#800000">Due date:&nbsp; 8:00 AM, Thursday, 8-29-00</font>
 </p>
-->
 <font size="4" color="#800000">
  Read P<sup>3</sup> Chapter <span lang="en-us">5</span> - Section<span lang="en-us">
	</span>3 up to &quot;<span lang="en-us">Displacement Under Constant 
	Acceleration</span>&quot;<span lang="en-us"> + Section 4 up to the Example 
	Problem. </span>Then answer the following questions:
 </font>

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 <p>
  <font size="3" color="#800000">Enter your last name, first initial: &nbsp;<input type="text" name="Name" size="20">
 </p>
 <p>
  <input type="checkbox" name="Did_own_work" value="ON">
  Click here to indicate that you have read the assigned material and are answering the reading questions on your own.</font>
 </p>
 <p>
 1.&nbsp;
	<span style="font-size: 12.0pt; font-family: Times New Roman; color: black">
	How does acceleration appear on a velocity-time graph ? (one word)</span>&nbsp;
  <input type="text" name="Acceleration_definition" size="5">
 </p>
	<p class="MsoNormal">Recall that we learned in Lab M2 that if an object is 
	slowing down, its velocity-vs-time graph is approaching zero. Consider the 
	two velocity-vs-time graphs in Figure 5-13. Case A and Case B both describe 
	the same motion: a ball rolling up and down a hill. </p>
 <p>
 2.&nbsp;
  &nbsp;Explain briefly (six words or fewer) <b><i>wh</i></b><span lang="en-us"><b><i>at</i></b>
	<b><i>causes</i></b></span> the two graphs <span lang="en-us">to be</span> 
	different even though the ball has exactly the same motion in the two cases.<br />
  &nbsp;<input type="text" name="Why_graphs_differ" size="50"></p>
 <p>
 3.&nbsp; In both cases, the ball’s acceleration is constant. Explain briefly (5 
	words or fewer) how you can tell this fact from looking at the two graphs.&nbsp; <br />
  <input type="text" name="why_accel_is_constant" size="50">
 </p>
 <p>
 4. <span style="font-size: 12.0pt; font-family: Times New Roman; color: black">
	In both cases, during what time interval is the ball slowing down ?</span><br />
  <span lang="en-us">From </span>
  <input type="text" name="initial_slow_down" size="10"><span lang="en-us"> 
	until </span>&nbsp;<input type="text" name="final_slow_down" size="10"><p>
 <span lang="en-us">5</span>.
	<span style="font-size: 12.0pt; font-family: Times New Roman; color: black">
	In both cases, during what time interval is the ball s<span lang="en-us">peeding 
	up</span> ?</span><br />
  <span lang="en-us">From </span>
  <input type="text" name="initial_speed_up" size="10"><span lang="en-us"> until
	</span>&nbsp;<input type="text" name="final_speed_up" size="10"><p class="MsoNormal">
	<span lang="en-us">6. </span>Consider both graphs carefully. Then complete 
	the following four statements to make them true in all cases. For all four 
	statements, the answer is only one word (either positive or negative)</p>
	<p>
 <span lang="en-us">a.</span>
	<span style="font-size: 12.0pt; font-family: Times New Roman; color: black">
	An object that has a positive velocity is slowing down if it has a </span>
  <input type="text" name="accel_slow_down_posvelocity" size="13">
 <span lang="en-us">acceleration.</span><p><span lang="en-us">b.</span>
	<span style="font-size: 12.0pt; font-family: Times New Roman; color: black">
	An object that has a positive velocity is speeding up if it has a </span>
  <input type="text" name="accel_speed_up_posvelocity" size="14">
 <span lang="en-us">acceleration.</span></p>
	<p><span lang="en-us">c.</span>
	<span style="font-size: 12.0pt; font-family: Times New Roman; color: black">
	An object that has a negative velocity is slowing down if it has a </span>
  <input type="text" name="accel_slow_down_negvelocity" size="13">
 	<span lang="en-us">acceleration.</span></p>
	<p><span lang="en-us">d.</span>
	<span style="font-size: 12.0pt; font-family: Times New Roman; color: black">
	An object that has a negative velocity is speeding up if it has a </span>
  <input type="text" name="accel_speed_up_negvelocity" size="13">
 	<span lang="en-us">acceleration.</span><br /></p>
 <p>
 7. Suppose an object is dropped from rest near Earth’s surface. After falling 
	for 3 seconds, what will its velocity be<span lang="en-us"> ?</span>
	<span lang="en-us">Express your answer to three significant figures. </span>
	Assume that the positive direction is chosen to be downward.
 </p>
	<p>
  <input type="text" name="free_fall_velocity" size="20">
 </p>
	<p>
 <span lang="en-us">8</span>.
	<span style="font-size: 12.0pt; font-family: Times New Roman; color: black">
	What is the only force acting on an object that is in “free fall” ? (one 
	word)</span></p>
	<p>
  <input type="text" name="free_fall_force" size="20">
 </p>
	<p>
 <span lang="en-us">9</span>.
	<span style="font-size: 12.0pt; font-family: Times New Roman; color: black">
	In what direction do freely falling objects near Earth’s surface accelerate 
	?&nbsp; (one word)</span></p>
	<p>
  <input type="text" name="free_fall_accel_direction" size="20">
 </p>
 </font>
 <div align="left">
  <p>
   <font size="4">When you've finished, click on SUBMIT.</font><br />
   <font size="2">(Make sure you haven't skipped any questions unintentionally)</font>
  </p>
 </div>
 <div align="left">
  <p>
   <input type="submit" name="Submit" value="SUBMIT">
  </p>
 </div>
 </form>
</body>
</html>