99.36: What happens to the ine7dsl 7 d a+by jq,ds.0bqzie/-rtia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not (gu/r/e k z qe,a8s5kxt7ihj9 o+ewv)depend on the quantity of matter present. Which of the following properties is NOT an intrinsic prop/s,qe9wv+ ik(zethk r/ 5 ujea)7xgo8erty?

  04.16: A 20 kg boulder rests on tn(3uxhmr : ey,u8kc4 she surface of the Earth. Assume the Earth has mass urys c(en x4,3h:mk u8 $5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?

  09.12: A 5.0 kg sphere is in free fall near the surface of the Ear )h jj jo48qezqa6*fkks.z-+w th. What is the magnitude of the gravitational force acting onjj h+ s f4qj *ko)az-8q6.wekz the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its a) t04,i n,o9wa;vlwf4bncqxt/ bn4 qwccelerationbowwfb)ai/ ctqq4 nnn,v9t404x,w l; decreases?

  00.11: A certain particle undergoes erratic motion.k)i onbr,gs94f 2ycn1 At every point in its motion, iyfn1 9gkn4cs r, b)2othe direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string heldo ufdgc9 ;ynq6f+mm)4 by a person. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choices correctly identifies the)6ydum9q n; f4 cog+mf Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following situations is the sz;u/-gfgb ru,z6liy tj/,fme(m2 4r net force constantly zero onl ser;( ,2ym,bj64 m tgrgzu/i /-fufz the object?

  13.28: An object is in free flq if5s 8d5h9jall close to the ground. A person intervenes and slows the object uniformly to rest. Which5d5hsf8 jql 9i one of the following statements must be true about the magnitude of the acceleration of the object as it is being stopped by the person? The magnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibr(jwbvjm txy* 96xtf-/ium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting onw jxmfb6y9/t x*t(j- v it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newf hy fzbr s,akb we5ckpfs)-*fk *y;*e*r6i/8tons can be combine to form a resultant wi8k;s)hfwb * yafe-*zpyfrf*k c be*/s,6 k5i rth a magnitude of which of the following

  10.06: Which of the followin2tvzxlod c2(- g statements is most closely associated with Newton’s Thirocvdt2x zl(2 -d Law of Motion?

  95.06: The reaction force does not cancel the action force bar;/yn/ju tvt (3jk2-yb kei/ecause:

  14.14: A box rests on the floor of an elevatyvh4v(e e3r( sor. The elevator is accelerating upward. Which one of the followinh(evv3 (esy 4rg choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant spe +3*riqg ib:smed. Which one of the following choices correctly describes tii+ qg *:rsb3mhe Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The battzv8zu u,sw m0.c(m1qeerswings and hits the ball. The magnitude of the force that the ball exerts on the bat is alwacwzu(1 0 zq8.uemvm,sys

  11.13: A physics book sits at res k w+hgvq:mdt42qy g*.t on a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the forh*gq q4:v .d+2ktmgywce that the table exerts on the book?

  05.06: The students in e 3op r:7)acjx78iwjw a Physics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, wh eji7w:7 8aowrpc3xj )at conclusions can the students make?

  99.03: If the net force on 4yar cf1fudkj5. s2i-+u5sz jan object were doubled while at the same time the mass of the object was halveu 5srjdk- +4sj fczau fy.5i12d,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from restvkwis b+ t1 zt0sb-e3jh*1w; k hf1oc: to a speed of 20 m/s in 10s. The magnitude of thew1 v 1ti c*zbbjtsfo3se0+k1;kh w-:h net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the trh0:xi-g 0zfd6z uo4gpailer is 4 times the mass of the tractor. If the tracti-zd0:z gx4 h6po fg0uor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why lsj(2 au9g s2tdarge tractor-trailer trucks generally accelerate much more slowly th2ssg 9u2jdt (aat automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink xa ); 2rsu1u ud;a2eruthrows a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. a;1 us22dr;u x)ruuaeWhich statement describes the subsequent motion?

  00.13: An object near the surface om /5npjljy(o-dp -3mxf the earth with a weight of 100 newtons is accelerated atoxm-3jn mj/pp dl(5y- $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accel,mxd8b)*ei jd ke 44wjerated from rest by a constant force of 2400 N. What j4bk8)m d,je4wei*xdis the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a ro)ub: cvpwyn a x5(n+vuj+ 0sm8no;zj3ugh horizontal floor before coming jwm (8n5bnzyuc:+);3n vu p+j0saxvo to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initvbd;8kr y g*7yge)3 cuial velocity 4.0 m/s slides 8.0 m across a rough horizontal floor befo)7y *u;cvbgdeg3 k r8yre coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface whileoqbipc+7dpum jx zpw- ;:/*b6 a person pushes directly to the right on the box with a force of 60N. The coefficient ofopdiwx q*bpcb:-7jpu/ m;6+z kinetic friction between the box and the surface is $\mu_k$ = 0.20. The coefficient of static friction between the box and the surface is $\mu_s$ = 0.60. What is the magnitude of the force of friction acting on the box during the push?

  13.16: A block initially moving at 8 m/s accelera1m2bawf/voz)g1ai gt;wq9 r ( ihc:2t tes uniformly to rest on a horizontal surface. The blocwfri1cag 9q /:ta(th2) gzi12bow;m vk travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a s;l/ e 3xgd8dltpeed v with its brakes locked. It then hits dry paveme;3 dlegtxld/8nt and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry road is μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a patch of ice at a speed v,u,1y.p5ifobod j/vp with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry rovo,. dpoyfu, j/bip 51ad is μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop by slamming on6t t w(xtx8 i9i d7nlx3 mbptjk;eve:q +k4*/w the car's brakes n8:ket7 9q3vtp6;kettd bmww( /x4 l+xj iix* and skidding to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an6y n)jo00z g/hkcj;qz: ww3 gr automobile must carefully control each of the following d goq0wz/czn r )3hj;:6jw0k gyevices. Which of these devices can cause an acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weight of 150whk3)ai; fefk 2l9h: j00 newtons is 24000 newtons. Abo;wjkhf3 )l fe2k i9h:aut how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across2 osx6.eb,* c/ upsaqu a horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exerts a force M to the left, which is half as large as the force ucxa2p .u6, sqe*sob/ T. Given that there is friction f and the box accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows5:lyo1 w 1xaxkw+x nyno;-zn, three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly-1xnn ,a;xzo+wl: konw 51yxy over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coas, ( 3)niwwytymter tracks of equal length. Assume thatiw3y , )ynm(tw on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first?

  02.29: Assume the rollercoaster cartrolls frict/ 5o wjn4vrirqae:x7 5ionlessly along the curved track from point A to point C under the influence of gravawx75j:q/n5orr i v e4ity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by hupccb8dl-pcnc,ss )nt4 4cc0(k23j a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction betwejcc8cc t 2d4b)0 c-p(4,uk nshlpc3nsen the box and the floor if a 250 newton force on the rope is required to move the crate at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block inibd9a,iq rfy+*ht( ,3nt)tupotially at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 whu (dr+)y9,ftnt tp*q,i3bh oaile the coefficient of static friction is 0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower acro 95rlkpkdj48by x0zu-ss a horizontal patch of grass with a constant speed by appjby4k zr95du0-pl 8 kxlying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is mo.da1n6n )s9y z1ruuu lving. Which of the following statements concerning this situation iyuua.n 1zdulr6)19sns CORRECT?

  06.15: A crate of toys remains atc: :uyc ;d)idvokp9 ;h rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?i:c;yvc phddou k:9 ;)