Work and Energy

Physics Multiple Choice


<div class="wp-block-create-block-problemblock">A small sphere is moving at a constant speed in a vertical circle.  Which of the following quantities is changing?<br />i. kinetic energy  &nbsp;&nbsp; ii. potential energy   &nbsp;&nbsp; iii. momentum<br /><br />i and ii only<br />i and iii only<br />i and ii only<br />ii only<br />iii only<br />ii and iii only</div>


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https://www.youtube.com/watch?v=AXQQLKM6ZhE&#038;t=02m20s
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