99.36: What happens to the i7twz(bgzdtt 1ha5:z q41;w gx nertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that doesf k. fhhuga331 not depend on the quantity of matter present. Which of the following properties is NOT k3fh1 . ahugf3an intrinsic property?

  04.16: A 20 kg boulde /5 jm9qkzlybsg-o-8tr rests on the surface of the Earth. Assume the Earth has mass bjg--s5t8lz mk/y 9 qo$5.98 \times 10^{24} \; kg$ 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 z9ccx)s*+pa8 o ,mfxdfree fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? cxx a8o9dfz,m)* +cps The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible fmn2( 5pctu cfvtjncr-863cb 2rwld)8or an object’s velocity to increase while its acceleration decreasest)cr28ccr 8 jd 6n5-b mpuw(2tflvn3c?

  00.11: A certain particle 0g6e 6w2g(ghkuqcd5 zl*id)uy):bm c undergoes erratic motion. At every point in its motioncgl b*cd2 m(u): uhi5eg6ky)z6 q0gwd, the direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held +gjji i e-s;jz;* nag: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 in;j-ej a:+gzsj;gi* 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 sity.cqz0.:z*n ifl2*d wmrjit;uations is the net force constantly zero on the ozf.0i:jtyd*i cz.2 ;nlq wmr*bject?

  13.28: An object is in free fall close to the ground. Ae33d+acaxomt7tyo-ur 9 4h6t jn6h;u c:bc;q 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 peru4bn; c 79a;j: oyu om66xhcq 3dc-ae+t3 thtrson? 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 three forces, F1 of 30 N, F2 of 50 N, andw5eyiy x 63m0p F3 of 70 N, acting on it. The yxeym53wip 60 magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be cqx. l n/dit1rdp+n;ze a5 l .f/nuht)*ombine to form a resultant with a magnitud;lan/nr . le.ht5+fnzd)t uqd1 /xi*pe of which of the following

  10.06: Which of the following statements is most closely aspbyxaxr 1; ib83q0v/ nw h3/wdsociated with Newton’s Third Law of Motionh/wbw;y xix 83/3braqd p01vn?

  95.06: The reaction force does not cancel (ye(dixqsrabd ov.6ham( 1 +.the action force because:

  14.14: A box rests on the floor of an elevator. The elk2;dq8tf+ ix/ylkb* p evator is accelerating upward. Which one of the followingkx8*/2+ bylk pfqi;dt 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 with const92 qnmx,3jc lqz6m7fdng 4m8yant speed. Which o7mjl9y ,gm 3d xqn48 q2zfmc6nne of the following choices correctly 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 a pitcher with a speed of 35 m/s. The batter.p mr 6bdsy(pic3j2o8swings and hits the bbci(ysj3odp2.6m 8r pall. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. Ol v1z -m,3)x5i3e jyzej kqoh7n top of the book is a calculator, also at rest. Which one of the following choices is hzi3m)v 7o- kejz3qx ely 51j,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 lab conducting an expszy 9p7gwwclt8:;r,d5 ejbx /eriment related to Newton's Second Law. The collected data were displayed on the graph at theyx; tr9p5wje7 cwdl /g ,:bz8s right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at thes4rn r x1(2mqa same time the mass 2arnq4 xr(sm1 of the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from restqun n0 ,(+tlkhq1d(;z3ng ziu to a speed of 20 m/sn,z3(+dqk0q u1; g(t n nzuhli in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck ryxv9 kzy/oiyj)0 +r6is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor ac/y+xov y j 6iky9r)zr0celerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tr 5e.rb djnd09h3 oac0iactor-trailer trucks genera ri90hbo 0e3.djn da5clly accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a fric;x. pyd*dzvg p2ur: e;tionless rink throws a 2 kilogram ball, giving the ball a vex;ge:.dprd2 v pzu*; ylocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the ea5hcs a v7 h( fapi1vzvvkt:9)4rth with a weight of 100 newtons is accelt z9s ih hav45vavp(7fc)v:1 kerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 qbuna irh9gj8:n)t3l8 qk:l7 gf0t k+kg is accelerated from rest by a constant force of 2400 Nrakb38+ juh l0q8kgqnt: 7f 9tlg:)in. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with inits4 xub12un :btial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The:bx2n1sbu4ut 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 velocity 4.0 m/s slides 8.0 mbuxwq,. l*m6v. /jxv 30:onepfs hb, w across a rough horizontal flxx3/esf wpo 0:v lbhu,*6v bn j,w.q.moor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surfa.3imdz p (bf+9hw.v de(2kstdce while a person pushes directly to the right on the box with a force+did .3pmb (ftd2zv w.(9eshk 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 accu1y8c9p1m)lo hfkg /ey4k ) fzelerates 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 gfo9)ku1/ e) y48 mh1y pfkczlsurface and the block?

  00.21: A car of mass m slides across a pavbyrpss(; f r nganb,q,u t-r 24w9q,5tch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a disvw5n,,p 2yrr(b4rf ab,9u sgs;t q-qntanced. 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 with itq6)wj ;pid g 159yruf euoa2y-s 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 dry road isyqu5a 2 - fe6orjiugp1w9 )yd; 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 emergen10 /b,mu wv/kod 2ijhxcy stop by slamming on the car's brakes and skidding to a stop. How far would the car have skid,2kdmx/1hwo ui /bj0vded if it had been traveling twice as fast?

  99.39: The driver of an autom(pk)+y1wxgti +(y 2ovf o0yq6rq,a tnobile must carefully control each of the following devices. Which of these devices can( wy6ft0,apigny +)ok+q 21 xqr(v tyo cause an acceleration 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 wehlmr 0 /1)mygehb6z: hight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surfachy/ 1lebmg z)0h h:r6me of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor i0 u:b:3faxut. 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:xiu :3bfau 0t the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller9a t8i:fp. uv t8mc-km coaster tracks of equal length. Assume that on all t p.-ucm i a8tm9f:kvt8racks 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 coaster trqvp )y,cz03gq0m go sk5;:akvacks of equal length. Assume that on all tracks the roller coaster carts start from rest at thezgg: ok0yv0c; , sqva)qm 3p5k 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 cartrollsh:)t-knix *swi-5 hdm frictionlessly along the curved track from point A to point C under the influenceih *m)swxih nt- :k-d5 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 ro ao8 :dmqoxk*g2s. m*xpe 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 crxg dsm*m:8ako2x*.q oate 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 j1ceebuou ,d*;h0nag7l i n8 1force as shown. Thecoefficient of7,h b0ju*i1on8acn; 1elgu ed 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 mo 3jv6g50ce bqjwer across a horizontal patch of grass with a constant speed by applying a fo5q 6egj0b c3jvrce 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 magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither isr.xfu4q/5n h ;5be. ez ,xqwef6isv,z moving. Which of the following state rnb.xfz6 sie.uvqwx /e;h 55q4zef,,ments concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pullxd x;;r v1+ntnoj( db+ed up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is rb+ vo+n1t( ;jxnx;rddesponsible for the crate’s increase in speedup the hill?