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23 Nov 2019

<p>A 15kg snowball is fired from a cliff 12.5m high. the snowball's inital velocity is 14.0m.s directed 41 degrees above the horizontal. A)How much work is done on the snowball by the gravitatinal force during its flight to the flat ground below the cliff? b) What is the change in the gravitational potential energy of the snowball-earth systems during the flight? c) If the gravitational potential energy is taken to be zero at the height of the cliff what is the value when the snowball reaches the ground?</p>

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A broken clothes drier with a mass of 128 kg is hurled from a cliff12.6 m high with an initial velocity of 14.5 m/s, directed at anangle of 39.8° above the horizontal.

a) How much work is done on the drier by its own weight during itsfall from the cliff to the ground?

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a) How much work is done on the drier by its own weight during itsfall from the cliff to the ground?

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c) If the gravitational potential energy at the top of the cliff isassumed to be zero, what is its value when the clothes driercrashes into the ground?

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<div class="figure"><imgsrc="http://www.webassign.net/hrw/08_32.gif" alt=""/></div>
<p>(a) how much work does its weight do on it. <br /><span class="qTextField"> <span class="box_num"style="display: none;" title="Points:/1">1</span><input id="RN_1022317_2_0_1031200"dir="ltr" name="RN_1022317_2_0_1031200" size="10" type="text"value="-4" /></span><imgid="mark_RN_1022317_2_0_1031200" title="Your answer was incorrect,but has changed from what was graded."src="http://www.webassign.net/wastatic/common/img/cross_grey3.png"alt="Your answer was incorrect, but has changed from what wasgraded." /> J<br /><br /> (b) what is the change inthe gravitational potential energy of the ball Earth system?<br/> <span class="qTextField"> <span class="box_num"style="display: none;" title="Points:/1">2</span><input id="RN_1022317_2_1_1031200"dir="ltr" name="RN_1022317_2_1_1031200" size="10" type="text"/></span> J<br /><br /> (c) If thegravitational potential energy is taken to be zero at the lowestpoint, what is its value just as the ball is released?<br /><span class="qTextField"> <span class="box_num"style="display: none;" title="Points:/1">3</span><input id="RN_1022317_2_2_1031200"dir="ltr" name="RN_1022317_2_2_1031200" size="10" type="text"/></span></p>
J

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