99.36: What happens to the inertia of an object when its velocit0,w a1bntui+su b.8u ty is doubled?

  02.14: An intrinsic property of matter is one that does nitz6*uw 56a saot depend on the quantity of matter present. Which of the following properties is NOT an intrinsic propea*ua6szt5i w 6rty?

  04.16: A 20 kg boulder rests on the surface of the Eab jr*dsbk pqh0 snow88 ,/f:.hrth. Assume the Earth has mas8q/bh d.k:n sspfhjr 8o b*,0ws $5.98 \times 10^{24} \; kg$ 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 inwk(r* au3tbb8 free fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by a k (wu3t*bbr8the 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 accelere y. xyc2) rx:g;oc9dyation dd 9yr;o:x ccxy)2g .yeecreases?

  00.11: A certain particle undergoes erratic motion. At every point in itsb1 2 vbi3:q)c rg34donwzx; cm motion, the diovqg2nbbcmwcd);z3 4 ix r1: 3rection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at thex9s9 tc;rm(fvs:i0c9sk r -e1bl ome : end of a string held 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 tsex0bv9eim;9tlr (osc9rm:1 s c k -:fhe Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the followwi)iz)z 2(qgth6kh. gwm *qh) ing situations is the net force constantly zero onh)6z ti(2iqz)hhw*q .gk)m wg the object?

  13.28: An object is in free fall close to the grou6ul n1hi, j: :;xm+oh oa*a,wp5 sszeznd. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the objhjsm ,6:*1nahu s+ az: oewl5pxio, z;ect 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 equilibrium has tq6y 6fz4ud8b :o m b9o3hvmch/hree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude ofovdzo4 b: 3bcuh/fy m86hq96m the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10qu*mf1*l bi+b h6 mvnt2j/:ml newtons can be combine to form a resultant with a magnitude of lbn t*mhm: qm 6f/ujbvi2l*+1which of the following

  10.06: Which of the followitrxsqv*,a( ijt5)8kvdyp*4yx x*+ l x ng statements is most closely associated with Newton’s Third Law os4dx8 p*il +jqvkva*x txx*( 5y)t, ryf Motion?

  95.06: The reaction force does not cancel the a5im 0 zu qi)e3ovojj e8*qs)4xction force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratint3og6i+ -d0l3rhmq wfg upward. Which one of the following choices best representdl +3g3fwroi m-qt60 hs the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward throug9x),xg qlf v u4**yaaeh the air with constant speed. Which one of the following choices correctly *x qa,9x*u g)4vlefay describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by aw)szs:v*sudc 8 m-tg7 pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude cs:twv)7g-ums8 *d zs of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a ta cw6jiv,g0y ;b3h+lmmble. 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 force thai6bw hjm+g3 v;c m,l0yt the table exerts on the book?

  05.06: The students in9ri3 a: zbizo:6kv+ yy 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, what conclusions can th6:brzii+ykv:a3 y z9o e students make?

  99.03: If the net force on an object were dd2c/es: n s4zj a1 tud3ruk2r;oubled while at the same time the mass ;j skrd c:zu/sra u2tnd32e4 1of the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly fro3e,0 ck,wnwo6z/cs+o 5dlwm w z)wz5 rm rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the car is:)3wwde o0kzw, wz ,rc5lsm5c+ z/nwo6

  99.05: A tractor-trailer truck is travel)gg6 xjk+h: vming down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates f h6:)mkvgjx +gorward, the force that the trailer applies on the tractor is

  99.16: Which of the following prix-w;7yq) fnmzv*q wnt4h-b. ynciples best explains why large tractor-trailer trucks generally acceler -;zf.q*bw-4yy7 )xhmn n wvqtate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless 45c wsm*w sl 68rbmef2rink throws a 2 kilogram ballfmblre8sm w* w25s46c, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a w,g.nwdbf8 gq1 eight of 100 newtons is accefdb8. qgn1 gw,lerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant f6xpu-+ 2m hxjzorce of 2400 N. What is the speed of the car 8.0 sxju hzx2- m6+p after beginning?

  98.32: A 3.0-kg block witx6y2wty/2 l.sodcl y7 h initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest/76t.w locy 2dylyx2s . 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 initial vel58m h4tsll;rd ocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coe5l d4s;tl8 hrmfficient of friction is:

  09.21: A 20.0 kg box remains at rest on a hbmr-s /uub4y r vl/5l7orizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surfarbu47/-s vrlm/l5 byuce 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 acceleratej33l4nrchj.vz. ee, /noz9 zgs uniformly to rest on a horizontal sz3 4on9. g/jzerlnhv, 3ecz. jurface. The block 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 speed v withcyay) uz r6c8qr19mhj0x0k- g .fyz9c its brakes locked. It then hits dry pavement and skids to a sk6a0qzmyu.r 9c0z)9gcfjc yh1- 8ryxtop 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 rotqryd:h-yxb+- j 1- a patch of ice at a speed v with its brakes lockedjtrhybyr- :o-d- q+ 1x. It then hits dry pavement 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 speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop by slamming on the car y7l8ihv*8x v8(hn0yqbd eeq9*1jccl's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice as7dl1 byneeiq8qcl(v *hx808*j9yvhc fast?

  99.39: The driver of an automobile must carefully control each of the follz;vxilp+twlx* 8 p/d (lpa/ )howing devices. Which of these devices can cause an accele; pz( l+t i da/pv)xplx*w8hl/ration 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 15000 ve4us 9 b/s:ep7-wdxinewtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the s:-7vis4e w/be d9pxusurface of the Earth at takeoff?

  07.21: A box slides to thlu 0+rpr3 d/b +h,nrgqe right across 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 T. Given that there is friction f and the box acceleratrguqr3lh+n,/ pr b0d +es to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller c ssx;k .tdy +eml/rd2,9 0vpkn gab,k1oaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly ove k /gb2ypdr,d1kse ,0 knlt9;xvm+s.a r 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 beloru8 of:y4l(*gm tjcag.0q 36 jo6rgkjw shows 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 kjg.0roc oy6(g grtm*a3jj4f:6 l 8qufrictionlessly 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 frictiof8(u/nm3 r;;qy knlconlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's acceleration at lrn(m3;unof ;cy8 kq/ point

  02.40: A box with a mass of 50 kg is dragged across the flo 486ri.6uf 0at0kvo tzza9kqror by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between the box and the floor if a 250 newton force on the rope is required to move the crafakt zr4utrzva.k 080 96q io6te at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is punlh6 dq y31v(mhxv1 s r5;bi.hshed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction hs 5v;m1l6 hvriybnx.1(q 3 hdacting on the block after a time of 1 second?

  05.10: A homeowner pushes a kuj y+dxs;1o ,lawn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in ;ks1dj,uxy +o 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. Neitherf wuw 3-fsg:6y is moving. Which of the following statements concerning:s u-fwgfw6y 3 this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the gej6hcf;.m r0sleigh 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;m j ef.rc6gh0 hill?