99.36: What happens to the iner /ovn (s1fst+o8hg qy)tia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depenbr/lpdulh -9 2d on the quantity of mh-ld 9 br2/pluatter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface;b8mw uoslw0 * of the Earth. Assume the Earth has massmw uw0o8*l bs; $5.98 \times 10^{24} \; kg$ 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 Eari(21b kh+5 paipr 2:( jcgjkzeth. What is the magnitude of the gravi ckzaj2p+ i:h1rg(e2pib( 5 jktational 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 vel2kcvjddi(ww m+j/ m- 4ocity to increase while its acceleration decreases4kv+m d c/mij-( w2wdj?

  00.11: A certain particle wkjt:r9v/gd, undergoes erratic motion. At every point in its motion, the ,:g 9vkt/wdjrdirection of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the aikq5-kpp88q bk* wog0q r 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 choices correctly identifies the Newton’s Third Law pair force to the force of the strq0wqkpk5b og8 p q*-8king on the block?

  07.18: In which one of the following situat qf r8z7n9rpzffw.1 *fions is the net force constantly zero on the objrz.ffrf n891 q *p7zfwect?

  13.28: An object is in free fall close to the ground. A person interve0zaye j/ +g1c, 0(k.uqbm gfgines and slows the object uniformly to rest. Which one of the following statements must be true about the maggz0m1eq(buy a, /. 0ggi fkcj+nitude 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, auih2-6 qr:zr:wat pj7 nd F3 of 70 N, acting on it. The magnitudpzrh6u- j 2:riw: qa7te 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 ;s yi b0yn1,jja resultant wijy10n, sj;iby th a magnitude of which of the following

  10.06: Which of the following statements is most closely associ msnxa:hqifo 0m h3.5lip4:1bated with Newton’s Third Law oxb:3 hi.pnq :0mish14l f5ao mf Motion?

  95.06: The reaction ftpi:l n *d+-p ms2:xpw.oa6 dqorce does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceln y i*f9(bx.tkerating upward. Which one of the following choicby. *fti n(x9kes 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 cd syzk-3w*rgu/z 4q6xonstant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting o/ -dzx3krzu s g4wqy6*n the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. v85-u+j.. did)ja6oi fde1h2zdd vf s The batterswings and hits the ball. The magnitude of the12 + dze-i.5ju.fvsddo hjdva 86)dfi force that the ball exerts on the bat is always

  11.13: A physics book sits at res8gx 6q of/( plrnto v6i(f2s(it on a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s /6(i6lspg2( n ofoqrit8f(vx 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 zo4q- cwcz wne-w* j:h:i78yv conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conc z*z87 eovq:-jwy:c c 4nihww-lusions can the students make?

  99.03: If the net force on anjz/wivgz8ye t0q8(p66t a atm/y1bq(djfu ). object were doubled while at the same time the mass of the object was i /(u6q(8vy.y tgzwmbza)t /aj1p6j0fd teq8 halved,then the acceleration of the object is

  96.15: A car whose mass is 1xq /xtkpu931ok b(h7e500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the q u93(p ktxe/7koh1bxnet force accelerating the car is:

  99.05: A tractor-trailer truck is travelingu*o +s-lkq;c2 h4snwz down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor z4lwso- +;sk h *cqun2is

  99.16: Which of the following principles best e )ax/khw,8d hbh;mrv7xplains why large tractor-trailer trucks generally acceleratxm8kh h 7adw rb);/hv,e much more slowly that automobiles?

  99.19: A 50 kilogram s7qrft)i,ose4*t(b nimcia) ( kater at rest on a frictionless rink throws a 2 kilogram ball, gifrmi neba()4t(s* itq ,)i7 ocving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface-oj (h.c:3 -iq8 u15gdzxzq xa1rghyc of the earth with a weight of 100 newtons is accelerateo1j5.a gq y1ghxd ir-h -x 8c(qz:uz3cd at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 120096tuk rjjh-bha)m1yg,v 6x k: kg is accelerated from rest by a constant force of 2400 N. What is the h,h-avj)y:uj kb9rk16 g6m txspeed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with irquvpfu00tjb* ;qh8 ;7lb7yvnitial speed 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 b 0ruvu ; ql*;b7p0b8qtjh7 fvyefore coming to rest?

  95.38: A block with initial velocity3f h *orz ha3ub/:yes, 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficiur*h 3hyz, 3:fse/aobent of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pub)hfq5t in1*d8e z/ zlshes directly to the right on the box with a force of 60N. The coefficient of kinetic friction betweeez8n)i dbf*15 /htqzl n 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 oxa7pgw ).omq3 f+ p;jile 3il)n a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represe+paqiepw. )l7o3mif)lxj;g 3nts the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides acrok g13wmy- 2ulpss 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 21mklw- pu3yg 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 par/y8bcx iuu ljvh 7;3*tch of ice at a speed v with its brakes locked. It then hits dry pavu hj;8uy 3/* bvil7cxrement 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 ca.oey fzg9j ;0-8zr;as8u ulacr's brakes and skidding to a stop. How far would the car hauj -eu0zralsao.9gc ;;8f 8zyve skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control e*ie)a. ji y kfpd/n1mk05bzm 1ach of the following devices. Which of these devices 51yiek m kb.ip*za1fd)nj/m0 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 with3 e1uecuxnknlaq h 9t+w1 (jq-*(j8gx a weight of 15000 newtons is 24000 newtons. About3( nwn(ch1k*q 1eaujt 8l q-g+j9xxue how much time 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 0 t 3g4y 4 rcg(ggzb1n/)( dphnpnr4tfto the right across a horizontal 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 thg4r4by0)g(gng h r4n3cpd(fp/ t nzt1 at 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 coas /0judh5 phmk1vab+n0)i6knr ter tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionless bkhh/npa j51 n06iukm0rd+ v)ly 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 th 6 27 zkzl3yg/avnxox6ree roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start fromx oa 67/36zlykxv2gnz 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 rollercoaster cartrolls fr(b/xb8*h z zidictionlessly along the curved track from point A to point C under the influence ozbhix8d*(/ bzf gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 5s7ujefe j :0a,0 kg is dragged across the floor by a 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 a7 ej0ef,j asu: 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 100f,(ydz l)m m1k N force as shown. Thec)z (lk1mf,m ydoefficient of 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 p2fk* p*k rip/sz9o1hmower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the direct9p*kh/zsr1o2 fki*pp ions 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 is moving. Which oyiwsdo.,j2h/m 0 oavp l/uu6dj 0ur7;f the following st,o wuhrj lo.iy0j/6pav mu udd7;s20/atements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh ilz 7q++wbtru i7:g1 dz4ym-v js pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the cr vjmwz1 iu7qt + r7+4z:lgy-dbate’s increase in speedup the hill?