99.36: What happens to the inertia oflg3 b-b;-m y(m.yqwd,uyvvzv (-xs*e an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that ayu7/a a.jmj+n0w4j edoes not depend on the quantity of matter present. Which of the following properties is NOT an intrins4m+a a.yjw7/ujn a0je ic property?

  04.16: A 20 kg boulder rests on the surface of thex qy u*zk5+2ftnhv,p o;sb-)q Earth. Assume the Earth has masq )p*fks zbth 2uoy-v;qx+,n5s $5.98 \times 10^{24} \; kg$ 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 50vbtcci :;h6 owrpqym)l(,q fall near the surface of the Earth. What is the magnitude of the gravi mycbhp,o0: c q)wq5(vrlt;6itational 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 whilefpb.y)ka* hx j ;2eex4 its acceleration decreases?x k4 ;*afepb y2eh).jx

  00.11: A certain particle undergoes ej vw87,ntn .mkrratic motion. At every point in its motion, the direction of the particle’s momentv nn8wk,mj.t 7um is ALWAYS

  17.14: A block is suspended ih35hy ixyo/j 9);rn 11ko har9pejv(w n the air at the end of a string held by a person. The person pulls on the string uniformly accelerating the block upward fo9hi oh v9 e(r wyx)5no r1y3j;pakj1/hr 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 const.8 i hsmf/4;o uyb.jlxik 5/qzantly zero o8is jk/bu5xzf/qol;. .i4mhy n the object?

  13.28: An object is in free fall close to the ground. A person intervlsey: 2mtsl 46enes 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 fl6 :2ym lss4terom gravity is g.

  98.03: An object in equilibrium has three forces, F1 of+t7uu,-e c wmn+uh,(slr xdp, 30 N, F2 of 50 N, and F3 oftusw7cr +e+d-mp,uh x , n(,lu 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 newtonsbw0vf0 paft.owv1 r-s6 zup,3 can be combine to form a resultant with a magnitude of which of the follr1p-o z3 6vw0wa,.sb0 ffu pvtowing

  10.06: Which of the following statements is most clm4y3748je a5 zx.az wjzq wec4osely associated with Newton’s Third Law ce4 .ja 4j4m x7 5aeqzzw3zyw8of Motion?

  95.06: The reaction force does not cancel the action force b v,-ss(g h0gwmecause:

  14.14: A box rests on the floor of an elevator. The ele gwc5tl zj3;k6vator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational t;l3g wj6kzc5force acting on the box by the Earth?

  15.15: A skydiver falls downwa .e3ax pjf2,.sfr/7f8qymm*8t b gqsk rd through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair f/xfe.bmpg qmsff ,rja . *8ts78q 32kyorce to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed. r0)1 xxxgm 7tiv5tss of 35 m/s. The batterswings and hits the ball. The mgr.vxs)0tx tx1 5s7imagnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of thel4c (bpf,:g )utmmys.yj8 k1d book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table lsyb1m.fyu8c,gt m :4pk)( dj exerts on the book?

  05.06: The students in a Physics I clasnb6 *o6c/m6olo0sm ka s were in lab conducting an experiment related to Newton's Second L0m66b/*kocnals oom 6 aw. The collected data 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 oddrm( j*i* k6vbject were doubled while at the same time the mass of the object was halved,then the acceleratio(m*v id *j6rdkn of the object is

  96.15: A car whose mass is 1500 kg isd,9 9zem1yguq accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the netumez91 y9, dqg force accelerating the car is:

  99.05: A tractor-trailer truck is trav;(5vn +i gtju-)mcmi evi+ cd7eling down the road. The mass of the trailer is 4 time7j gm +i+evuvct m)id5i(cn-;s the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following princi4 rk*k;5-d+ htuhi-oi * tbapkples best explains why large tractor-trailer trucks generally accelerate much mo aio*kht 5rp; ub-dki*+h4tk -re slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a fricoso *,lv; ( ep*oh8xgftionless rink throws a 2 kilogram ball, giving the ball a velocity of 10. o8*hge*, pflso ox;(v0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100jkx65i6-nbejfbmmt5j-ye3b f j; )raz 5() pc newtons is accelerated at );fjr )3czjbk e5-j-mpm( bi5afx 6ne65yj bt $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is acceleraufp5vc*0k q:o q )mex6 wdkh)* +akel2ted from rest by a constant force of 2400 N. What is the dmokk2+l )ah5p x:vq 6u0fw)e qk*c*espeed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across aiqb-( p:wz wd66+y-ymjvr u h5 rough horizontal floor before coming to rest. The frictional force acting on the 6ymj6u (yv p:w ib+qh-w5r-d zblock 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 0t+y;afeo:bluf+bs6. dyr)kjj d y0( m across a rough horizontal floor before coming to rest. The coefficient of friction+e :r0 +b0uydtaj of;f)kb(d.ljyys 6 is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while 9im(l ub pvf+5si/+yqw,m3q da person pushes directlmub+ls+/i 59vfw m, yqipq(3 dy to the right on 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 initiallw89h 9 m 79aipn-ffrvey moving at 8 m/s accelerates 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 r-8 fen i97vp9wafm9hblock?

  00.21: A car of mass m slides across a patch of ice at a ey/m+v , et jn*b,no.xl3ju7kspeed v with its brakes locked. It then hits dry pavement and skids to a stop ixuy. t7kojb3m/lv *+nne,je ,n 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 e lv2v zdm:+(vwith its brakes locked. It then hits dry pavement+(m2vl vze :dv 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 ala u m+p+g7goi jorr 16gq3x6(8d6jpsn emergency stop by slamming on the car's brakes and skidding to a stop. How fpp+6gomr6( d 8lq1oa7 sjr+ g g3xu6ijar would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully connb 524x mb6vuulj/s8 qtrol each of the following devices. Which of these devices can cause an accele/b2nbq8vu 6j mulx5s4 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 wiwmttq ;p750oath a weight of 15000 newtons is 24000 newtons. About how much time is ; 5pom q0wat7tneeded 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 horizopqs p 2t(bdq49ntal 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 accelerates to the right, rank the sizes of these three forces exerted o(qq tpbpsd92 4n the box.

  02.27: The diagram below shows three s;k (k3n q/r.prcp fv+roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start f;/.pk rvrqc (n pksf+3rom 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 eq c sdb(s2-;yl/sqtl q(teg8+bn1 :bbvual length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves y ;c:v(d (+etn182bgsbs btb-qs /qllfrictionlessly 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 the curved tracycf x:o jrgewe6+w;t,2 i- p)zk from point A 6:y jtxzc o;w-i +e)p2,ewfg rto point C under the influence of gravity. 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 ropfkk n9 19so*fxf6(,c f j)o40rfwcvgxe which makes an angle of 300 with the hori1k x s ,*ffcwv9fo(f)rc 40 j6k9gxnofzontal. 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?

  04.40: A 6.0 kg block initially at rest is pushed agai: h /rkcc 7z,3oxbre*bnst a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is rb3z* c/xe rock,h7 :b0.50. 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 horizontal patch of grass+h.h k-z5 ybts 0atjvi*gis (; with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarilyik50.th(g*vtsh -j+;b iay sz 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 r.dbasse.2kc+i (v9j . Neither is moving. Which of the frcks si.e(+ .2 jab9vdollowing statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh a6vqc7y gv)e6vs the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible fg6)6e cvy 7vqvor the crate’s increase in speedup the hill?