99.36: What happens to the in(gbl vs qlj23s90j)hx ertia of an object when its velocity is doubled?

  02.14: An intrinsic prowjy zyq ;:ju k,a,zc*.perty of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrins*wjuqza,.c;y :kzy ,jic property?

  04.16: A 20 kg bouldeg) sx*igufg5txmq, xu ,;7v6yr rests on the surface of the Earth. Assume the Earth has mass ;ixsq*gg ,uxv gtm, 5f76x)yu $5.98 \times 10^{24} \; kg$ 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 is cultp* u-o bk.c) y zvwp (13,9agy1rithe magnitude of the gravty11kuv.p(ouwzcc)-ap yir* l,b g 93itational 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 while its acceler zc r n*b4xu33+ijt4acg 80kxration decr84xgx k t3*a4c0rj +bicurz 3neases?

  00.11: A certain particle und)n*gn/,rr6 g c ycar*w5 ceho.9cbe-xergoes erratic motion. At every point in its motion, the direction ofr xo.gn9c nb , )c rc*6ywee/*cgha5r- the particle’s momentum is ALWAYS

  17.14: A block is suspenn 2d8uf/r) s7y,--bzupvz ewjded in 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 tim 7sdb-- rj2y,uufe) nzv p/8zwe, 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 constantly zyzx9: mj3 irpk9 d2ig;ero on the obje;xdkiym9j2i g zp:r9 3ct?

  13.28: An object is in free fall close to the ground. A person intervenes andzuhu,z c/ ,uu: slows the objeu:z uhu, /,zcuct 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 from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N, anb- 55vt aervsgc* /ymjdn/p1- d F3 of 70 N, acting on it. T5rv p //5 -nm*csatdve-bjyg1 he magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to form a5,ruim vz46pf resultant with a magnitude of which ofmzirpv 4f56u, the following

  10.06: Which of the following s1if 0snq 8d4 emz)zmu7tatements is most closely associated with Newton’s n)8me0z dusqm14i f7z Third Law of Motion?

  95.06: The reaction force does not cancel tmgk 0 29kyvz,khe action force because:

  14.14: A box rests on the floor of an elevator. The elev2 ,kb xstzpc-2ator is accelerating upward. Which one of the following cho, s-b2zt2 cxkpices 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 nqe1/ bhk5d n9through the air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair for/d9n1 knqeb h5ce 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. hi uc(l kn 9zz8nw4cn9vo9clhhh 52:7 The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bat is alwaycci9nnchw99 2h :4 lnhv8(uzh7oklz5 s

  11.13: A physics book sit.:xn ncggz2 b f6k./lg;rz2eus at rest 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 2b zk:/ z.;gx26cn rnel.g gfuto the force that the table exerts on the book?

  05.06: The students in a Physics I class were in la7j qrq/ nl8fd2b conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graqfr7n 8j/2dl qph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the sahgixdqp5 ij 6l62 )0xyb1xm2dme time the mass of the object was halved,then the acceleration of the objbgx0xxq2dhm5ypi2di1j)l 6 6 ect is

  96.15: A car whose mass is 1500 kg is accelerated unifo k*dp- xgege4:rmly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accek:4pd e-e xgg*lerating the car is:

  99.05: A tractor-trailer truck is traveling rq4 c3: k,,4htqjii giracr4*down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates 4 ra ki qr,4gi*4c:jh,3qi crtforward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tryb/jrtxiu:u/d d4koz 82e w3 5actor-trailer trucks generally accelerate much more 5wuibxt/uke3jdo d:z / y2r48slowly that automobiles?

  99.19: A 50 kilogram 6.dh ka vwe,4k:wn w0oskater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity ,0nd.:wk kvwhw4oe6a of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 g7pjb :nc;x -zx6xns, newtons is accel:x 6g;np7 -xs,xnzbcj erated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass i:9 u -lh6wkreas 1200 kg is accelerated from rest by a constant force of 2400 uwarh6e9: lk-N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizo3gj;fh-/t 8 /mf)zhu gddo4d xntal floor before coming to rest. The frictional force acting on the block is 3.0 N. How fa-og4 8dd mzdu 3h ;gh)fxtj//fr does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a reukg 0f fg0w0:ough horizontal floor before coming to resgg0 fk: fu0e0wt. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a pers11vhnb67 bg hpbk+ut* on pushes directly to the right on the box with a force of 60N. The coefficih71 6u*bnb1vkt+bh gpent 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 akai.h rpz) f7;t 8 m/s accelerates uniformly to rest on a horizontal surfacea;if ).r7z khp. 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 block?

  00.21: A car of mass m slides across a patch oh d-5e tud mafc(tj50-f ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coeffm-5c5d(teda 0u-t fhj icient 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 its brakecxmjzku2 d;naj - t8ng7r+ /1ps locked. It thek+/c2rj;gm t -1up7nd z 8xjnan hits 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 brakgkn5uqxi s( 2 zh.n h)-keul/3es and skidding to a stop. How far would the car have skidded if it had benx-uh3z/. huis5qkk lg)2(e nen traveling twice as fast?

  99.39: The driver of an automobile must carefully controt2 vhv.yp3yz npp/-,w l each of the following devices. Which of these devicespzt-3y/ p.pv ,w2vyn h can 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 weight of 1500ul6( (s) q cgy4c)cmyu0 newtons is 24000 newtons. About how much tuy ym)l c c()6u(s4cqgime 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 horizontak1r(;z c0uma ntp+e uk2tsd65l 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 accel5td6amscp 0u2k+ nt;ukr z e(1erates 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 ei-ki); w kk*cbqual length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlici bw*;k-) kkessly 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 r djs/.gpwi 4i;e*2qgqtc i q4 r++)hhpoller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start f) / pgqeqig4*4sqtic;wr i . p2d+hj+hrom 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 rolo)p0vhrh d*oyb l(*8n; -dktslercoaster cartrolls frictionlessly along the curved track from point A to pointo t0prdlv)d(s 8ob;n** -ky hh 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 floj g/*j,r(qg olor by a rope which makes an angle ol ojjr, (q*gg/f 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?

  04.40: A 6.0 kg block initially at rest is pushed against a wall by a 100 N fs4 fh .a30p;l ikemg9horce as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is truhh0l f i3k ga.e4m;p9se 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 u: (tuq 3w ot(ly*jb8vj)2fcfof grass with a constant speed by applying a force P. The arrows in the diagram correc8qbfw j:jutylo3)ft vc(*2 (u tly 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 aga.,i lxh8eimze0 e7rr (mp fw 7n:wn+k)inst a crate on a table. Neither is moving. Which of the following statement+ f7klwe xw im,8mne (i7.0ep r:)znhrs concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pul/sr0eiji qj. 6led up a hill with an increasing speed. The crate is not fastened down to the sljj. 0/qrs6iei eigh. What force is responsible for the crate’s increase in speedup the hill?