99.36: What happens to the inekz f i+z 4i,u06tmn9zwrtia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is ony2x:b gg3iid. z0tm+6e zlq*se that does not depend on the quantity of matter present. Which of the following properti2ems0g + xzlz6q* ybd:t 3i.gies is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on theeid;am p *tp c2b):6kn surface of the Earth. Assume the Earth has mass i2pabp*: )dke;tmc6 n$5.98 \times 10^{24} \; kg$ 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/gnjhdu.os9d )56t3le6g)tztm/u bvk3nr 1w is in free fall near the surface of the Earth. What is the magnitude of the gravitatrb36 tdd tujzvnn hgu9/w 35osl / )6ge1k)m.tional 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 vnvmhv oki91 -5yo6q6while its acceleration ok5vin1oq69v m-6yv h decreases?

  00.11: A certain particle undergoes erratic motion. At every point in its m(q 34ohcv 4.hkrp6vq motion, the direcq(p ovm4qh64r3 cvhk.tion of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at *n hr2 ph+s+ifthe end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. D2s++hfr* hin puring this time, 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 constan96; 4qmxtiab ttly zero on t6q;4ab tit9mx he object?

  13.28: An object is in free fall s, s.wq08y / m:zcsmxuclose 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 acceleration of the object as it is being stopped by the person? The magnitude of the object’s acceleration is yu smw,8 s:sqxzm/c.0 a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibriu lzkfvmp* 5yyd)s r-*2m has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnysp)* frdvmkz - yl*25itude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a forczw g)0w gs3g1(9)x iza7heslne of 10 newtons can be combine to form a resultant with a magnit)s)e10 ggx 7wshnl3iz9(z gawude of which of the following

  10.06: Which of the following state gwjm*i2bz0 ) mi4nw09k nuvb:w/ 0odkments is most closely associated with Newton’s Thi:uwd*20g4vzw) mjbm0kbn9 kwiin o0/rd Law of Motion?

  95.06: The reaction force does not cancel the action force becm d sk;6sz18jzause:

  14.14: A box rests on the floor of an elevator. T0zey4v rpi ;rss 82 eni03/f95k:p yq8l zlyjche elevator is accelerating upward. Which one os4zcfpr8llve 9ipyy5n: 3q ; r2/ sei0j8zy0 kf the following 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 constant speed. Whickaf7poezjkh ael1s /,*6) 2hc h one of the following choices correctly describes the Newton’s Third Las2 zoa,7 jh/fpec1h a )l6k*kew pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thron;/et4vxwji b v-w. l :mm6ij-wn by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnijx-/ i4w wi.;e:j 6lvbm m-nvttude of the force that 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 )9yqu7d*9r,x/jrvco olt)9r crr+ e xa calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exejrqo/ )97)lvyc,xrdx r9t e+curr*o 9rts on the book?

  05.06: The students in a Physics I class were in lab conducting an e 5nyqns3 qna-9xperiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the sta9nq q-3nsyn5 udents make?

  99.03: If the net force on an object were doubled while at ti5q: f 5d02yfzi0k7vn6y vjgocbqo/-he same time the mass of the object was halved,then the acqg 0vyo 57z fcb/o6yj i0ndi:k2q5-fvceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniforwnof 2z:) rewozcbnm( y7r06;mly from rest to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the woywmz(; rczf7o6r) n b2n0e:car is:

  99.05: A tractor-trailer truck is traveling down the roa -;kli0 giqz4weu 94ldnj +d2xd. The mass of the trailer is 4 times the mass of the traqng0 j-9i42+zki;4 ldul xewdctor. 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-truj hf)h7o+76xigd1kt -q h2 hvailer trucks generally accelerate much more slowly that a + j hdqvh-htkgho177ux )2i6futomobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink6+ypd psn:6im throws a 2 kilogram ball, giving the ball a velocity on6pdpyim+6 s: f 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 ne:3lwit 9q 0yexwtons is ac qex39i: 0tylwcelerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated fld3+av,jm6 k4 hl9 1yctq sjv19gmy o:rom rest by a constant force of 2400 N. What is the speed of the car 8mm6 sla9j:t1d+lh,49 jg 1vvq3c yy ko.0 s after beginning?

  98.32: A 3.0-kg block wfk50xb n3+0y ehhiy r+egv-d 9ith initial 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 fa rv++ghy0h9nd5e 0ke f-by xi3r does the block slide before coming to rest?

  95.38: A block with i g c4 owqvrpp)s),95vqnitial velocity 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to res5,pogc wq9rqp)v)4 vst. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while 9y .lxw 9:s:uhhrso:la person pushes dil9luhys:w9h:osx. :rrectly to the right 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 acj9ntl( 4x95rqo r0 fbwcelerates uniformly to rest on a horizontal surface. The block travels aq5(j 9trwrxf 9bon0l4 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 slide9vn qxl9co-j-s across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a sto-xcvqn l o-99jp in a distanced. 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 speedstn)nh bk7dxoig127wt 0-3wr v with its brakes locked. It then hits dry pavement and skidsnitwd7tx - n0o2h)3r 17bgswk 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 .uts fp1kczjfnjo ea7-57, g)an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been t ek) pac1jjto.f7 nz-s7g5uf,raveling twice as fast?

  99.39: The driver of an automobile must carews j oxz0rk0:i0-qiu)ojl;y * yn ,/iefully control each of the following devicesje)uiy,xli :0yi j- 0zq0o/;r nwo* ks. Which of these devices 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 24000 newtm nnr1*3)bh6 spmva4 gons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near t bn*mrg3p 16m4nsha) vhe surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person called Tedz0uzd3t;zwa - 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 the right, rank the sizes of th ; awz0dzztu3-ese three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equa:r:s-pmht 3 jil length. Assume that on all tracks the roller coaster carts start frj-:pht: msir3 om 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 of 8 vv2 a:j p;mpt9hxey3equal length. Assume that on all tracks the roller coaster cartsh93 j ;myv8p2:ap vtex 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 rolla0a2q1d). t/ usaari nercoaster cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What wo12aaridts uq/0.a) nauld be the direction of the cart's acceleration at point

  02.40: A box with a mass of 5*.0n) z :lkdb z.oroej23 4udgwuiq0 j0 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 a 250 newton force on the rope is required to mo0ibgd. du0lo2jzo 3* :euw. njzq)k4rve 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 pushed6mn kn 6weou.2z+b 6r7bhs lu2 against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static z6 2 bnomubh.e +2u6l6nw7s krfriction 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 mower across a horizontal patch of grass wigwrz/ h tsfy2**s.6llth a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes ol.* thyw6*l zg/fs rs2f 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 9zb (m2 r.91vbmnzlmsa crate on a table. Neither is moving. Which of the following statements concerning this situation is CORb zm9m .nzbs219(v rmlRECT?

  06.15: A crate of toys remains at res2v utc+v+bse2 t on a sleigh as the sleigh is pulled up a hill with an increasingsu2+ce+2 bvtv speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?