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test093p3

# test093p3 - 12 A force of 4.0 N appli~d ~o a spring...

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12)Aforce of4.0N appli~d ~oaspring compresses itby 8.0cm. What is the amount ofwork done to 12) --=:;.J) __ compress the spring by an additional amount of5.0cm? ~ )<1.-:: 0 ,0 ~ -t- 0 , 0)" M :::;-d ·/3 f;t1 13)An object ofmass 4kg is thrown vertically upwards from ground level with an initial speed of 20m/ s.Ignore friction and use g = 10m/s2. What isthe kinetic energy ofthe objectjust before it hits the ground? 8 12>, Usa. ('UfJSpVVII.1)M P' . ('Ylet'S) (2. f~ k k ~ /<:. ~ £. -= !!J!- FIGURE 3 - ff:~ r- E. X 0,08"" __ B 1- f )~ l..~ ::::sa µ {l'11 /././ j. /rt v2-~ G f ~ f (eI: l')tJ)~ / ~ - J.. (1- L, "/.. - - I 2- __ I W;-).. k Yt- -'X, J .. /):./' h J!:L Wwe.::: e f -c,. .= z mil - ~ ;::.L(jc»(, /3 2..;., 0~ 9 '~"""'e// ::::t(4j({O) 1.._ [4 (/0) {(d) -=[200Jj ).;: RJ, i6 31 A . A 14)An object ofrhass 4kg starts a rest from the top ofarough inclined plane ofheight 10mas 14) _...: .... -_ shown in Figure 3. If the speed ofthe object at the bottom ofthe inclined plane is 10m/ s,how much work is done by the force offriction? Useg = 10m/s2. o-~~ B)200J C)-100 J J l I k 15)On acertain planet an object ofmass m ismoving with an initial speed of4m/ s.
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