99.36: What happens to the inertia of an object when its9qgodpcps8 in kc +,h5n8p4 a9 velocity is doubled?

  02.14: An intrinsic 4dfd)n xvak (,property of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsi)dx,na( 4fvdk c property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth hasfx2aef hvjod1 sg*:z s/b479j max1b:eh*4fv9gj2f s/jd soz7ass $5.98 \times 10^{24} \; kg$ 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 Earth. What 2udj(hpr vwio*+ubd34 pc w+e:u h3 9zmo+9khis the magnitude of the gravitational force acting on the earth by the sphere? 4o m:wuh+9 d2w *rkupu33djbc+h+9 z i(veohpThe Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocitykbt mf- ;qsz/ ,hgf48o to increase while its acceleration decreas,fb;qgtzk- hm/fso4 8es?

  00.11: A certain particle undergoes erratic motion. At every point in its mo )6)9gb)ab 9wk*gyw yxjgggp6tion, the dj)ab ypgx9wk gg6wybg 9 g*6))irection of the particle’s momentum is ALWAYS

  17.14: A block is suspende,jdj4:hw 1lsnt jp188xudap* d in the air at the end of a string held by a person. The person pulls on the string uniformly accelerat*uwt x s,dn4jj11al:hp 8jp8d ing 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 block?

  07.18: In which one of the following situations is the net force c); qjiuc7 sz2donstantly zero on the2)qjzcs ui 7;d object?

  13.28: An object is in bl707*msg;bx(xcabxzu 0b 6d free fall 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 object’s acceleration is a and the magnitude of the acceleration fr; axbsbl*0 bdx zcum67 7(bx0gom gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N, and F je(6lg k5tu(dob *x7b3 of 70 N, acting on it. The magnitude of the resultan t (jb*ug7kd6o(elx5 bt ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be cylhx7kv.:( t)u ib( scombine to form a resultant with a magnitude of which ib lh s.kc(:yuxvt7 )(of the following

  10.06: Which of the following statements is most closely associated with Newt bbln dr 5e3q6yq;gvu-(m j)2(i.ecgzon’s Third (bi;emcdb l6y u3rqn.)q jg z-g(25evLaw of Motion?

  95.06: The reaction force dem mcu3nz;30s/j;v-m-gkxp g oes not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelera1 yif92osxuj fa;k pon;-kof 5(j1t9zwlb7 *iting upward. Which one of the following choices best represents the Newton’s Third Law pair force to t9snk1lfoky(x 7;fo *w t9fu-aiji p5b 2jo;z1he gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downwar-+pu.aa;p3* tbybm t pd through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the y3pba *.pam ;+tub-tpair resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 mhsu9kw5t + 5(a srd/zc/s. The batterswings and hits the ball. The magnitude of the f t955rss+zh(ucd/kwaorce that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book ikkh ke/og.7 8us a calculator, also at r.8 okehkgu/k7est. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lajzux82 wj4lv/b conducting an experiment related to Newton's Second Law. The collected zlj 2j/w4 v8uxdata were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled z-vo7lc1 p oc1while at the same time the mass of the object was halved,then the acceleration of the objcpzvo1 7c1o -lect is

  96.15: A car whose mass is 1500 kg is accelerr/ m:el d+8v 4t4eyqidated uniformly from rest to a speed of 20 m/s in 1+ teiyql/m48vred4: d0s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling dowvv5ux w hmzk5bp;cu 2d 20vihvv);r (3n the road. The mass of the trailer is 4 times the mass ofu5;m ; ibwr(dzuk vxc h2v352v0)hvv p the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the foi,o:)49ul- y8cu dv8 bopunc/p4pocellowing principles best explains why large tractor-trailer trucks generally accelerate much more slowlcbo8n ) u: 9pdiluoycp,/eo4v48pc-uy that automobiles?

  99.19: A 50 kilogram skater at rest on a frickxxea xrrpq 7p.6.hns 83oz9b4c 0ah2tionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequensb0 pxhh79n 6arqrxeop c3z.x8.24a kt motion?

  00.13: An object near the surface of the eyi 7jlf) oara2t0rk16 r,rqz);c; zhrarth with a weight of 100 newtons is accelerated rrk;tzfzhr6yi2;a 17r)j lc r,o0qa )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 forc+v(vljj f-jbxty 35nxod w,:- e of 2400 N. What is the speed of the 5wt-dof jv+3(xjyj -xn:v ,blcar 8.0 s after beginning?

  98.32: A 3.0-kg bloc : mgayo+).p (tkdwtw4k with initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force actp +(kmy).w g :two4adting 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/s slides 8.0 mgt tj6/ j1eo2b across a rough horizontal floor before coming to rest. The coefficient of friction is:1tjtoe j2b6 /g

  09.21: A 20.0 kg box remains at rest on a horizont vvz)vsg49g9x pn50xf/ jsb2dal surface while a person pushes directly to the right onx4d90v 5zxsjf bg)2/ p 9vsgvn the box with a force of 60N. The coefficient 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 accelerates uniformly to rest on q*a,;8gzl- s w+s rz;qwkrj0 ka 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 bewsra w0+;* zz8r q-jgks,l;kqtween the surface and the block?

  00.21: A car of mass m slides acro fukn,n)t2k b;lv* y8qss 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 friction between the tires and the dr t2k),*f ;qybnnk8 luvy 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 with 1gfzaa; yea+o/ ie/s: its brakes locked. It then hitso ;sa/fae:a/i 1+yzg e 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's braap1e9 dsklk 23kes and skidding to a stok 2es93l k1pdap. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile murngk bl6)11 oust carefully control each of the following devices. Which of these devices can cause an acceleration olr1 1k)un6gb 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 newtons is 2l7o1jpkb :-sv 4000 newtons. About how much time is needed to increase the rocket jlvsb -kp1:7o’ 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 horizontal floor. ptqf.s+hz8ldn bv0 8.A person called Ted exerts a force T zfv l+s0dt8.8hp.qn b 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 accelerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below5i c dex 2:l8:mzq8tfh shows three roller coaster tracks of equal length. Assume that on all tracks xh8:qdi25f 8m lztec: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 be traveling the fastest at the finish?

  02.28: The diagram below shows thre8au1 , ,aacn-uqgng/fe roller coaster tracks of equal length. Assume thaau8a/uaf nq,-, c ggn1t 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 cakt9i*5ytb;d nrtrolls frictionlessly along the curved track from point A to point C under the influence of graviti ky*5tdt;n9by. 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 a rope which mazct lb r(fs)+w4m j*q*kes 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 crate at a constant speed of 20 m/s as shown in the diagram? j*tbqms lrcw*4+fz )(

  04.40: A 6.0 kg block initially at rest is pushed against a wal( 0 hi:ign /kwwl1.dri0h0spll 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 trui k0p(:wnshh0/d l gi i0.1lrwe of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass with t.mtmfr4 ;i3n(pc )esl5cz:qa 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 amon;:m . 4m3tc5z tcnps rqli(fe)g the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table.0/ird,.uo ohj Neither is moving. Which of the following statements concerning t,r /i0d j.oohuhis situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as odz l( dwh3 89o7icjpoyg-p/5the sleigh is pulled up a hill with ajgy-8id zp(9p 5 cw7dh3lo /oon increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?