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maximum kinetic energy k Emar a 2 m vz { x 9.1 X10 x(5x105) 2 K E max = -19 1.1375 x 10 J -19 1:1375 X lo 1.6 X1079 K Emax 2 0.71 eu use equation be K tmax = $ = 1:24 x 103 - o. 71 eu 2 so 0 = 4:25 en So, $ = 4.2 eu Ary CS Scanned with CamScanner
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