99.36: What happens to the inertidjex jt+d2gn(yl8 9w) a of an object when its velocity is doubled?

  02.14: An intrinsic property of p0 tm*q95mz vfmatter is one that does not depend on the quantity o q0*mpm5fz9 vtf matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the szex0/ja p rv;tuwk3 *7urface of the Earth. Assume the Earth has mawtj ;a*k/3 0repv xuz7ss $5.98 \times 10^{24} \; kg$ 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 ohs*rlfyk bg55(6d r 9the surface of the Earth. What is the magnitude of the gravitati gob5r l6 k5(yfs9*hdronal force acting on 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 whildh3sr9pgwvjnm9. :bf8f .o) +cor w kjhm-4b6e its acceleration decreases? :p.or96h)fkwcdmfw 8n.rghbvm- o 3jb+49sj

  00.11: A certain particle undergoes erratic motion. At every point ixx( uzv)3 ep6-d v)fezn its motion, the direction of the particle’s momentum is ALWAYed zv(p z)f u63xve-)xS

  17.14: A block is suspended in the air at the en ).b7lglnnfo:7 hu*xai h7b5 sd 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 the Newton’s Third Law pair force to the force of the string on the blo.n7bfl: 5ui)naxs7 lh7o*hgbck?

  07.18: In which one of the following situations is the net force constantly zerbn2 );v*df ckt5gbpd8o on the object?kd* 8tb cfp2;g) ndbv5

  13.28: An object is in free fall vgin : tbp3-ik3dv+s:close to the ground. 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 object as it is being stopped by the person? The magnitude of the obje p :v3ti b-sgk3i:vd+nct’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 5) pf ( w5jr or)wc;s-,q+s-mnbg;ntox4 1pqa h0 N, and F3 qcn;t wos ; n1,sfp)ajw5or4)gmb+p-(x -rh qof 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtonssm -lp,moo ,( a:.e3tcs2uhcz can be combine to form a resultant wit-lp oza(c sm,:2 uceh ,s.3mtoh a magnitude of which of the following

  10.06: Which of the followinr o7nj:q n+8bwg statements is most closely associated with Newton’s Third La:7 qn o8wnrj+bw of Motion?

  95.06: The reaction force does not cancel /v* c *lbaf/nv qm *,ta34qnmjthe action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleraty.+v87xsmd0 4b(cyq.c dqgering upward. Which one of the following choicd+gv bydmqy. 4 xs7qeccr(8 .0es 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 speed. Whicz)r*r s9zoz vr1xqv75h one of the following choices correctly describes the Newton’s Tz rzr9 7v rq)s5zo1vx*hird Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by9rpn7 fadt /md vz4-ar); x,as a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bavr ds)n pz dra-,m9a7t4a;f/x t is always

  11.13: A physics book sits at x4 -r is-o1ivhrest 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 force that4s i-1vxhr io- the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducofh y j8c-vw5gg5+(d ,-zfci+a 5xdj iting 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 the g5-+dx v-jff8y5( ,wi+jho 5cdaic zgstudents make?

  99.03: If the net forcg1thopo6 ra1o4g(-b r e on an object were doubled while at the same time the mass of the object was halved,then tb opo1 ag(g-1rr64o thhe acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniforma9):.2;sebgvfxa ibrly from rest to a speed of 20 m/s in 10s. The magnitude of the net forcei :grxa9v bf;s.2a b)e accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the roadlpkz+:/zksq*sqs ld 4c2 l h3zx+. w;k. The mass of the trailer is 4 times the mass of the tractor. If th+ 3ws kzq.;qs pllzz*/lchks2+x4kd:e tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the fo wdvy*v 6qa* 5gv t+7nl,wcej6llowing principles best explains why large tractor-trailer trucks generally accelera66w+v g 7wd,y*vn5l v*ecqtj ate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on :vyn6(7d3oox fax ; hia frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subseqxv; ydi(:fho76oxn3a uent motion?

  00.13: An object near thl*z ) qc6, p3zzu)d0oay 8nzlhuwee1+e surface of the earth with a weight of 100 newtons is accelera)3)ze +lnlwzh0,uuzqp6 ya c 8e1oz*dted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accele.)( l-jd0rwsgm:bp lril56d nez qf7et *(4ut rated from rest by a constant force of 2400 N. What is th05) rm . uwl:r7ln d6iee(q dg4bfttjs(*l z-pe speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/syu,7rig*.n9pqgi-rq slides across a rough horizontal floor before coming to rest. The frictional f uq7ng*p.iq9,irygr -orce acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m(fk w (ddub(44ow lj ;,ws,vho/s slides 8.0 m across a rough horizontal floor before coming to rest. The coeffico4;uwo4,k j v(d(fd(wlwb , hsient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person ob (0 xxdomqq3, g6c k.m3mtwrmg,7;o pushes directly to the right on the box with a force of 60N. The b0.x7 kwmgt m(q 6,3,g o;qoocm3mdxrcoefficient of 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 accel+26h6/oe(v/cgez nsex s *ndzerates uniformly to rest on a horizontal surface. 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 bsg(ech6vn6no+d2 /s/* z eez xlock?

  00.21: A car of mass m slides acro1t.mi z bt6v,pss a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friptimb,t 6.1v zction 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 spee 4ys75ihm 3d jt1tg,btd v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction betb,ti57dgm sjt31h4 ytween 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 emerg5hoyzdkj10blp 1md1 3h*-fc iency stop by slamming on the car's brakeslj0kd1 omhh-*d 1bfi1z53yc p 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 an automobile must carefully control each rsvx p s)l3p7 (nil*,gof the following devices. Which of these devices can cause an acceleration in a movi(x*ig7ns),vl3r ppl s ng car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a we, om lvsj1z7wl8o d:-l0 dfb1zight of 15000 newtons is 24000 newtons. About how much tim11 b87z0fdol:d -som,wljl vze 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 across a horiz2gxj :x /2f+p pop0h3- o3iqj fvrw7gi)u hxs+ontal floor. A person called Ted exerts a force T to th/wx-+ipxp3o i q)v: h u jrx ogpfhs23g0fj+27e 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 accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster trac luf7 u n 3lggt1d94ce3qy/:5tmdpy4bks of equal length. Assume that on all tracks the roller coast7n/ 3cpu9 44l: tltmd1fe5 3ggyqdub yer 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks of equal lengtj+fi+om. mektuzhe ar696:4l h. Assume that on all tracks the roller co+fr im.9mklj6azo4+htu 6e e:aster 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 frictionlessly along t,w zxd t f1l79 .j+casr-0drhuhe curved track from point A to point C under the influence of gravity. What would be the xju ,9a0-rh+7t1zs.wdfdr l cdirection of the cart's acceleration at point

  02.40: A box with a mass of 50xewqs47-:5) d n zxath kg is dragged across the floor 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 newdqtn xx4aes7 -wz: )h5ton 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 initially at rest is pushed agai9gyx3o b3x ml+0(zygu8ffcs 3nst a wall by a 100 N force as shown. Thec+9 ffo03 gyulcs3zxm (gy3x8boefficient of kinetic friction is 0.30 while 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 across a.py p ;wylkp-c8f(/a z horizontal patch of grass with a constant speed by applying 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 magnitudesc/a- pwp( kpl;.yyzf8, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Which of t1a +p w(,t2h/;wgqnhw+ ,bwnor d0gilhe followingnh d+ q+gap1w0, /w2h;won(i b,g twlr statements concerning this situation is CORRECT?

  06.15: A crate of toys remains ghq ja 68et:v7 id,ex f5t*d0sat 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 forcj dqtv5f 0d:at6*ieg h,8x7 ese is responsible for the crate’s increase in speedup the hill?