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	<title>Comments on: A golf ball of mass 0.045 kg is hit off the tee at a speed of 45 m/s?</title>
	<link>http://www.golfblob.com/golf-balls/a-golf-ball-of-mass-0045-kg-is-hit-off-the-tee-at-a-speed-of-45-ms/</link>
	<description>Your Questions, Our Answers</description>
	<pubDate>Thu, 17 May 2012 08:18:47 +0000</pubDate>
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		<title>By: Chris B</title>
		<link>http://www.golfblob.com/golf-balls/a-golf-ball-of-mass-0045-kg-is-hit-off-the-tee-at-a-speed-of-45-ms/#comment-3770</link>
		<author>Chris B</author>
		<pubDate>Sun, 13 Sep 2009 15:17:33 +0000</pubDate>
		<guid>http://www.golfblob.com/golf-balls/a-golf-ball-of-mass-0045-kg-is-hit-off-the-tee-at-a-speed-of-45-ms/#comment-3770</guid>
		<description>Impulse is the change in momentum.  Since the golf ball is at rest initially it has no momentum.  Therefore the final momentum is the impulse.

momentum = (mass)(velocity)

momentum = (.045)(45)

momentum = 2.025

So using the impulse formula: impulse = (foce)(time)

2.025 = (force)(4.6x10^-3)

force = 440

Impulse is 2.025

Force is 440</description>
		<content:encoded><![CDATA[<p>Impulse is the change in momentum.  Since the golf ball is at rest initially it has no momentum.  Therefore the final momentum is the impulse.</p>
<p>momentum = (mass)(velocity)</p>
<p>momentum = (.045)(45)</p>
<p>momentum = 2.025</p>
<p>So using the impulse formula: impulse = (foce)(time)</p>
<p>2.025 = (force)(4.6&#215;10^-3)</p>
<p>force = 440</p>
<p>Impulse is 2.025</p>
<p>Force is 440</p>
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