99.36: What happens to the inertia of an object when its velocity is doul,f ne g :)qi0dl kvl/bxce03hp 54+rgbled?

  02.14: An intrinsic property of mattercc ;19jlks zson l 33t33qjs(k is one that does not depend on the quantity of matter present. Which of the following properties is NO3 93tj1zosj3qksl cl3kn; sc (T an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth m 4tt,kt5w6n3zft ainpb4dw3 df/k:8has masw/kandw 6t8b4ftn34zd5i3m f,:tptk s $5.98 \times 10^{24} \; kg$ 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 )f lvj1lq*pd)j5u ,/;kq fdhh. What is the magnitude of the gravitational force acting on the ea/fuv) 1hhjdqkd , l;p l*fj5q)rth 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 wjzy)if q)k8n(h)y)kz hile its acceleration diy))z)nh 8kyz )fk(qj ecreases?

  00.11: A certain particle undergoes erratic motion. At enad/m- wrfc5 bje 53w6very point in its motion, the direction of the particle’s momentum is ALWAYw/nd 5-wmjb3 fae 56crS

  17.14: A block is suspended ktvg1mmql ddj 82)55e mg)h4bin the air at the 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 chb12qhm5edmg) dl5tg84vj k )moices 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 situationv63fz6i zc yw+s is the net force constantly zero on t6zc +vf3z iw6yhe object?

  13.28: An object is in free fall close to the ground. A pe7a+9dcuv: qverson intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of theaue 7cq+:d v9v 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 equilibrb5u i-qio6hxk8d8c 9eium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitudi c5 xk ieohqb9-688due of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine r/lo0v+.c*aa0a kxswto form a resultant x/a+rco0k 0w*vas. lawith a magnitude of which of the following

  10.06: Which of the following statements is most closely as8 y-y/sod0w/cq z ;9fhrb:a rzp/ j7zosociated with Newton’s Third Law of Motion? hyp/f/b8rr:soj/-7 zc; ozdz9q way0

  95.06: The reaction force does not canp jfj3h,rs;;s cel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerat b0a x. e1s.7;iimmmlqing upward. Which one of the follm7aiexm qb0; l si.1m.owing 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(ii*ud1a*t m odi4x h: with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver duri 4ix:iua1**dh(om tding the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The batter57i mcux ewn*-cjqk+ or;qp*/swings and hits the ball. The magnitude of the force thukio;x-+cr75 qq* m*p/ cwnjeat the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a:ej;8st3pikm calculator, also at rest. Which one of the following choices is the Newton’s Third Lajpiktsm :38;e w pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conductini,j v/-uro)8jj3g )sqv-dryu g an experiment related to Newton's Second La)--v3 o jqdjjvr8ugy /uris),w. 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 object were doubled while at the same time (plq* )9e 7o cdwwepnqb9*42 crkbui/the mass of the object was halved,thencp9q 9b/7 rwu*kqec)*pneib4wd (ol2 the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly fro1 + k,qy 5rddrya/lj,5o )yfgfm rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the yd5gy qoflr)1a5 y/fj,r+,dkcar is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of tank524acr3on)vlw2l8k2 etom .t zz, he trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the.art2,o)valnknwmz 22 8ceo 5lk3 4tz trailer applies on the tractor is

  99.16: Which of the following principles besr1b2gsad .i q-utb:za96 *kgxl 0/op tt explains why large tractor-trailer trucks generally accelerate much more slowly that autxsrqz* /i ukd: b.20bop9a t1tg6-lagomobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rin w)x2e 0r b z-,awonp*rnr0b6wk throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which stao r0rwr2n*n-0 pwx)zw b6 be,atement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons e-.l*6mifth5c lr ro;is accelerated- r c6olfm*5r;t.hie l at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 ,43gm4 pqmq07epsem/i3htt k kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginnh 0, emi44gtm/qtpqpe3s3m k7ing?

  98.32: A 3.0-kg block with initial slq-+io(y,h ueerc 9/w peed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide be (-o ,uq+cil/9r yhweefore coming to rest?

  95.38: A block with initial v4zk5)x0y,ryovlw qz g n 8x,h8elocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coeffic80zxk)yygl,z8o h vnx54wrq,ient of friction is:

  09.21: A 20.0 kg box repz ,h b/9uj (co,q+jcimains at rest on a horizontal surface while a person pushes directly to the rig,p9hoc(j + j,q zicb/uht 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 initially moving at 8 m/s accelerates utg86,h-- c*a(qw0w jiguoktfw4 g ua3niformly 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 surfa-, u-(6h4jkfwqawioug tc agt8g0 3w*ce and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v with its b gu.e.o )tf*bgrakes locked. It then hits dry pavement and skids to a stop in a distanced. The coeffic*fet .u)g.bgo ient 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 acro5fhub5w9m+ z iss 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 5m5b i9hu+fzw 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 emerga,b t*x;*t voq2ccnucz58rz84rv x. xency stop by slamming on the car's brakes and skidding to a stop. How far would the car ha.5xz4 2xoqt 8z*x8 vrcubrn; vcct,a*ve skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control eachx*yo(dv p)7ncdni6 m2 of the following devices. Which of these devices can cause an ac62 vxn(d7nmcyip o*)d celeration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocketn)eyir )g:/hy2u wv: cfyrb93 with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 fyu:g) 9ycrr)2y: hv/n3bwe im/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a h) .rror b(lxo3orizontal 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 acrboo )r.l3 xr(celerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equ7h.owb4wy y 0rx/f3akif3wp) al length. Assume .ykb3 34/ywwpih0rfaw7x of )that 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaste jngx vy:f/4n(z ,v7arr tracks of equal length. Assume that onjr :(vv47nyn / ,afgzx 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 rollercoasteuswcsvl3cgyp,kl,588a w+, cr cartrolls frictionlessly along the curved track from point A to point C under the infkv, +cwl8p3s ,u,8gcaysc5wl luence 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 d5g6-txmwgq 2t5a f+ da 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 i-g2gf56m q+d xawt5dts 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 against a wall by a 100 N fort851 6b-*i7irsg eecwh adm/ fce as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 8i 1sbgc6ad-e*w7eim t/5 fhr 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 1t4 roymey*0 nhorizontal 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 relationrt*41oe0myn y s among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. l (gwg6r0 wqsc5dci3uc ) 39pnNeither is moving. Which of the 6wdg(l30ciwg s3qrc n )p9cu5following statements concerning this situation is CORRECT?

  06.15: A crate of toys remas65yfq, 6hswn ;/gqkh88 jdfhins at rest on a sleigh as the sleigh is pulled up a hill fhhnkqg5w/;d 6s8ysq, hj6 f8with 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?