64 lines
2.4 KiB
XML
64 lines
2.4 KiB
XML
<problem>
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<text>
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<p>
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Why do bicycles benefit from having larger wheels when going up a bump as shown in the picture? <br/>
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Assume that for both bicycles:<br/>
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1.) The tires have equal air pressure.<br/>
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2.) The bicycles never leave the contact with the bump.<br/>
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3.) The bicycles have the same mass. The bicycle tires (regardless of size) have the same mass.<br/>
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</p>
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</text>
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<optionresponse texlayout="horizontal" max="10" randomize="yes">
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<ul>
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<li>
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<text>
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<p>The bicycles with larger wheels have more time to go over the bump. This decreases the magnitude of the force needed to lift the bicycle.</p>
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</text>
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<optioninput name="Foil1" location="random" options="('True','False')" correct="True">
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</optioninput>
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</li>
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<li>
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<text>
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<p>The bicycles with larger wheels always have a smaller vertical displacement regardless of speed.</p>
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</text>
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<optioninput name="Foil2" location="random" options="('True','False')" correct="False">
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</optioninput>
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</li>
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<li>
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<text>
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<p>The bicycles with larger wheels experience a force backward with less magnitude for the same amount of time.</p>
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</text>
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<optioninput name="Foil3" location="random" options="('True','False')" correct="False">
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</optioninput>
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</li>
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<li>
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<text>
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<p>The bicycles with larger wheels experience a force backward with less magnitude for a greater amount of time.</p>
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</text>
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<optioninput name="Foil4" location="random" options="('True','False')" correct="True">
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</optioninput>
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</li>
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<li>
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<text>
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<p>The bicycles with larger wheels have more kinetic energy turned into gravitational potential energy.</p>
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</text>
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<optioninput name="Foil5" location="random" options="('True','False')" correct="False">
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</optioninput>
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</li>
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<li>
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<text>
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<p>The bicycles with larger wheels have more rotational kinetic energy, so the horizontal velocity of the biker changes less.</p>
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</text>
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<optioninput name="Foil6" location="random" options="('True','False')" correct="False">
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</optioninput>
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</li>
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</ul>
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<hintgroup showoncorrect="no">
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<text>
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<br/>
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<br/>
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</text>
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</hintgroup>
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</optionresponse>
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</problem>
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