99.36: What happens to the inerx chci4r m*63r6be ga-tia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend xp3:0cphd2i9 eb2i do on the quantity of matteri hi0pbc9ed3 px:2od2 present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder g34(b+v it bnlrests on the surface of the Earth. Assume the Earth has masg4bi(3nt v lb+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 fali u4:svpap ;jv g6fee* .o:s1p9r bmw9l near the surface of the Earth. What is the magnitude of the g w9af:j ;:1evp ispv9g 6ubrems4po*. ravitational 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 acceleratine1 ihz9( jmu,rjj)p lv45a4uon decrea pzr 9jui4,ujvanhje5)l (m41ses?

  00.11: A certain particle undergoes erratic mo g f8jq6xxx.-ution. At every point in its motion, the directio.u8xxf 6-xgqjn of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a perso* tz wqzc0 sqeo(57rs(n. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which*(szq wrt5cq0 e(osz7 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 nev p tcu;9uyg:-t force constantly zero oy;: uu-t9pcgv n the object?

  13.28: An object is in free fbgwyj/mk6 pj:9 4 tb4iall 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 agjb6: 4wyptm9j 4kb/i cceleration 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 9 y9qyc)94xck wi6tbbu*oh l5 N, and F3 of 70 N, acy c9)* hb99x4w6 5ctubokiy qlting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a -3 ni apz8pydr-zgp,j0rh6s b,2 azz1force of 10 newtons can be combine to form a resulta6dry8-p 2rpzjn30szza p,,a hb1gzi-nt with a magnitude of which of the following

  10.06: Which of the following st ) + lmirse-)g7mfvxbs7-y 3yhatements is most closely associated with Newton’s Third Law of Motion?x) 3+rmbs--es ) fgl7vyy7mih

  95.06: The reaction force does not cancel the action force je51v :nild1 tbecause:

  14.14: A box rests on the floor of an elevator. The elevator is acceler 8s)fd(iagt/ eo6n c:gating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitatio gdf6sc)o (/: inea8tgnal force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. Whi 6( 2m uxcjy90t9jrbdnch one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver durt(cj ym9 d0rb9n2u6 xjing the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The battp0guz7 h2urxmr21br,/ 8o nelw-j8yg9ec zp4 erswings and hits 7, r4w9ey gluc p8zx-82 rm/ nhezjo 0b2uprg1the ball. 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. a /v m6*,biy)dh5qn f(tk9yzx On top of the book is a calculator, also at rest. Which one of the followivqxyya t 5b)h,i(z/ fk*d9n6mng 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 lab conducfnkb3wg7 9 c/bq79e,cwu y 5wcting an experiment related to Newton 3gwnb9f7cw7ukce 59/, ybcwq's Second Law. 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 doe,6w3 tql lq;hh:aq52b9w yuta 9q x/6(m bfavubled while at the same time the mass of the object was halve;qv:t6/h,e(yxal5q 2 6bw h9a9ubwmq3aqtl fd,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from reswb g. 5akb4c - *al;h7kagv*jwt to a speed of 20 m/s in 10s. The magnitude of the net f aw.-lj5*vba;kg w kb7gch *a4orce accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. Thth14qcn6,hwb1qwg7 6 kg*w rxe mass of the trailer is 4 times the mass6gq1* b7g,whrw4nxtwh6qkc 1 of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-9p :on4 3pvhmktrailer trucks generally accelerate much more slowly that autm9 4p hn3o:pkvomobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink ttu 5)xz2jb2fjkxtk0f3qf62 xcwy )z3 hrows a 2 kilogram ballbtx z3fk 2wk63f0j2c2ftzu 5yjxq) )x, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the su6z1jroh1h:+ d+ e(d wynih b3crface of the earth with a weight of 100 newtons is accelerated az6o11hd3y+(hdnr i:w+jhebct $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose masstg m(zh2zqvv,l0 pm1/ is 1200 kg is accelerated from rest by a constant force of 2400 N. What is the sptm,01 hz/zvv qmpl(g 2eed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/spe rn*d 5ulb85bme6 c5 slides across a rough horizontal floor before coming to rest. The frictional me 56bbnep55ld*r 8u cforce 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 m across a rough horizonm s8ly x9e;fuhgf9w9: tal floor before coming to rest. The coefficient of friction 9 h yu9wx;m lfg:89esfis:

  09.21: A 20.0 kg box remains at rest on a horbkldc.(sr /5 oizontal surface while a person pushes directly to the right on th5. borckd(s/ le 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 o v fkh8+s;g*xta8gaz e,+dy8rn a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices bes8k +8eg8 f;rat+avg d,hsz*x yt represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides acros 60 6xehvsgv6dddyf*62tzm+bs 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 frictx yv6ts*df6dz+ bhg6 v260emdion 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 acyu4-6j,kmpfq ross 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 q p,fj-kym46uof 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-2n 6 4iqro2e8m5 jr)fw3f;runufdwc emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have sw 6q fo w) -m2eujr2fn8 ;rci5ndfu43rkidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must cardd5o gkd7 2 al tyb)kopn33.m7efully control each of the following devices. Which of these devices ab m) d2dy3knd.735kootgl7p 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 15000 newtons is 246ob ;9x 6kv rzydkms2+000 newtons. About how much time is needed kb z6;v r o2k+x6sy9dmto 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 horizontcwbp +/y b4qg0al 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 foc4/y + qwbbgp0rce 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 below shows three roller coaster tracks;9 fl6gc8p2igk6r xob of equal length. Assume that on allofk ;r98gig2 xbp6c6l 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 coaster tracks 9gpjejw: ,9yd n/z*eeof equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to t 9pnzwy/ gjee9,d*je:he 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 frictiobhku5 e7khn*d,db-djkv nuf: 8-+3zanlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's accelerat*avnj ,dd- - kuu38b5 hnf:zeh7bkkd+ion at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a ro5q +wg/* fuzalpe which makes an angle of 300 with the horizontal. Which of the fola f zg/q+*5lwulowing 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 107,j ,q(squvl osw6x 3j0 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the frictij o s(,qux7,ljw3vq6son acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patcq7 b / :pfrd;,fyivk;mh 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 relr, m;qb;fidkp7/f: yvations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans agai rxc(-bhuq 8z(nst a crate on a table. Neither is moving. Which of the following statementsc( bru8q -zxh( concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sle ,)w)mattluunz7-w57/. pspj4k x ccbigh is pulled up a hill with an in7.ukw-)bn a stx/ccmw45ppju tl7z ,)creasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?