ࡱ> 8:7 bjbjWW 8"55 00000DDDD`$DW$___#######$O%(h#0_____#00$ooo_00#o_#oo"h#` (u"#'$0W$"i(i( #i(0#$__o_____##o___W$____i(_________ : Name_____________________________ Period_________ Date: ____________ Force and Acceleration Acceleration = Final velocity Initial velocity Time = Final Velocity Initial Velocity Time Acceleration Final Velocity = Acceleration * Time + Initial Velocity Force = mass x acceleration Instructions: In order to receive credit for this worksheet you MUST show your work. You MUST write the applicable formula for each problem to receive credit. You can use a calculator but you must show all of the steps. You only need to complete any 10 problems. 1. A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its average acceleration? 2. A cyclist accelerates from 0 m/s to 8 m/s in 3 seconds. What is his acceleration? Is this acceleration higher than that of a car which accelerates from 0 to 30 m/s in 8 seconds? 3. A car advertisement states a certain car can accelerate from rest to 70 km/h in 7 seconds. Find the cars average acceleration. 4. If a Ferrari, with an initial velocity of 10 m/s, accelerates at a rate of 50 m/s/s for 3 seconds, what will its final velocity be? 5. A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2. What amount of force acted on the ball? 6. You give a shopping cart a shove down the isle. The cart is full of groceries and has a mass of 18 kg. The cart accelerates at a rate of 3 m/s2. How much force did you exert on the cart? 7. The wind pushes a paper cup along the sand at a beach. The cup has a mass of 25 kg and accelerates at a rate of 5 m/s2. How much force is the wind exerting on the cup? 8. You push a friend sitting on a swing. She has a mass of 50 kg and accelerates at a rate of 4 m/s2. Find the force you exerted. 9. How much force would it take to push another, larger friend who has a mass of 70 kg to accelerate at the same rate of 4 m/s2? 10. A worker drops his hammer off the roof of a house. The hammer has a mass of 9 kg, and gravity accelerates it at the usual 9.8 m/s2. How much force does the earth apply to the hammer? 11. Your bicycle has a mass of 9.1 kilograms. You accelerate at a rate of 1.79 m/s2. Calculate the net force that is accelerating the bicycle. 12. A runner has a mass of 89 kilograms. He produces a force of 84 Newtons between the ground and his running shoes. How fast does he accelerate? 13. The Space Shuttle has a liftoff mass of 2,041,000 kg and accelerates at a rate of 16 m/s2. Calculate the force (thrust) accelerating the Space Shuttle. 1FPghw& A B C O R S " # M N O 4 5 󜑃xj`h<OJQJ^Jh<hr5OJQJ^Jh<5OJQJ^Jh<h<5OJQJ^Jhr5OJQJ^Jhrh<5CJOJQJ^Jh<h<OJQJ\^J_H h<h<>*OJQJ^Jhrh<CJOJQJ^Jhrh<5CJOJQJ^JhrOJQJ^Jh<h<OJQJ^J"GPghB C S # N O 5 6 7 8 9 : 7$8$H$gd<gd< & Fgdr 0^`0gd<$0^`0a$gd<$a$gd<gdr { | } ~    IJ 1$7$8$H$gd< 7$8$H$gd<   V W Y Z MN'(ef  CD !cd˻˯ڠ˻hrh<H*OJQJ^JhrOJQJ^Jh<hrOJQJ^J_H h<OJQJ^J_H hrh<H*OJQJ^J_H h<h<OJQJ^J_H hrOJQJ^J_H h<h<OJQJ^Jh<hrOJQJ^J5JKLM   ^_`ab 1$7$8$H$gd<WXZ[hrh<H*OJQJ^Jh<h<OJQJ^JhrOJQJ^J bgd<6&P1h:pr/ =!"`#$% ^ 666666666vvvvvvvvv666666>6666666666666666666666666666666666666666666666666hH6666666666666666666666666666666666666666666666666666666666666666662 0@P`p2( 0@P`p 0@P`p 0@P`p 0@P`p 0@P`p 0@P`p8XV~_HmH nH sH tH @`@ NormalCJ_HaJmH sH tH DA D Default Paragraph FontRiR  Table Normal4 l4a (k (No List XoX HHDefault1$7$8$H$!B*CJ_H aJmH phsH tH PK![Content_Types].xmlN0EH-J@%ǎǢ|ș$زULTB l,3;rØJB+$G]7O٭V$ !)O^rC$y@/yH*񄴽)޵߻UDb`}"qۋJחX^)I`nEp)liV[]1M<OP6r=zgbIguSebORD۫qu gZo~ٺlAplxpT0+[}`jzAV2Fi@qv֬5\|ʜ̭NleXdsjcs7f W+Ն7`g ȘJj|h(KD- dXiJ؇(x$( :;˹! I_TS 1?E??ZBΪmU/?~xY'y5g&΋/ɋ>GMGeD3Vq%'#q$8K)fw9:ĵ x}rxwr:\TZaG*y8IjbRc|XŻǿI u3KGnD1NIBs RuK>V.EL+M2#'fi ~V vl{u8zH *:(W☕ ~JTe\O*tHGHY}KNP*ݾ˦TѼ9/#A7qZ$*c?qUnwN%Oi4 =3N)cbJ uV4(Tn 7_?m-ٛ{UBwznʜ"Z xJZp; {/<P;,)''KQk5qpN8KGbe Sd̛\17 pa>SR! 3K4'+rzQ TTIIvt]Kc⫲K#v5+|D~O@%\w_nN[L9KqgVhn R!y+Un;*&/HrT >>\ t=.Tġ S; Z~!P9giCڧ!# B,;X=ۻ,I2UWV9$lk=Aj;{AP79|s*Y;̠[MCۿhf]o{oY=1kyVV5E8Vk+֜\80X4D)!!?*|fv u"xA@T_q64)kڬuV7 t '%;i9s9x,ڎ-45xd8?ǘd/Y|t &LILJ`& -Gt/PK! ѐ'theme/theme/_rels/themeManager.xml.relsM 0wooӺ&݈Э5 6?$Q ,.aic21h:qm@RN;d`o7gK(M&$R(.1r'JЊT8V"AȻHu}|$b{P8g/]QAsم(#L[PK-![Content_Types].xmlPK-!֧6 0_rels/.relsPK-!kytheme/theme/themeManager.xmlPK-!0C)theme/theme/theme1.xmlPK-! ѐ' theme/theme/_rels/themeManager.xml.relsPK] "   Jb 8@0(  B S  ? 07 31FCORS!!"M~~  YZMN'(ef  CDc d Z [ x x /Z NX:y4j"{J-8*M?b