Chapter 229(f)One way of phrasing the answer: The spacing of the successive positions would changewith less regularity.Another way: The object would move with some combination of the kinds of motion shownin (a) through (e). Within one drawing, the accelerations vectors would vary in magnitudeand direction.Section 2.5One-Dimensional Motion with Constant AccelerationP2.19From vvaxfi222=+, we have 10 97 1002 22032.×=+()msmcha, so that a=×274 105. ms2which is ag279 104times.P2.20(a)xxti f−12becomes 4012280850m mss()vi..afwhich yields vi=661. ms.(b)at=−=−=−0448..s2P2.21Given vi=12 0. cm s when xti==3000.cm, and at t=200s,xf=−500cm,xxvtatfii−122: −−=()+5 003 0012 0 2 00122...a−800 240 2aa=−=−32 0216 0.. cms2.*P2.22(a)Let ibe the state of moving at 60 mi h and fbe at restaxxaaxfxixfixx220602121 0136002425280121 821 816091975−−
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