99.36: What happens to the inertia of an objxlh( frw /(sx*v;hh4d ect when its velocity is doubled?

  02.14: An intrinsic property of matter is one tq, 2u50jlxsmy hat does not depend on the quantity of matter present. Which of the following properties is NOT an intmuy xl5s,q 20jrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Eartze-drkan5e:b*e do ,8h has mass oad ned:z,b8-erke *5 $5.98 \times 10^{24} \; kg$ 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 t3j);t hnq uif)o-stu 4he surface of the Earth. What is the magnitude otn3fjqu ;-tu 4osh)i)f the gravitational 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 incr*s 0mo a k- q50x0ee9zahzthn6ease while its acceleration dee9hnq* 0so 0ha atxz5-mk6z0ecreases?

  00.11: A certain particlem4sb.2s ekn6h undergoes erratic motion. At every point in its motion, the direction of the particle’s momentum i64b. 2snsem hks ALWAYS

  17.14: A block is suspended in the airz-3rvj5e og+l at the end of a string held by a person. The person pulls on the s v3o-z+5rej lgtring 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 string on the block?

  07.18: In which one of the following situatij894gpai qf ;ok c3fo;ons is the net force constantly zero on the objiq ;op9c3gf ko4j8; faect?

  13.28: An object is in free fall close to the ground. A person intervenes ai exav m6uu82-n8yv,knd 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 a and th2vv 86e,yxakm ui8n-ue magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of xcon.9; ;s/bot : f8my w00sbep-uupn30 N, F2 of 50 N, and F3 of 70 N, acting on it. s wnums;cf 0o: 9.b8/-p;oxeny0b ut pThe 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 a rtb28ox xeq30.n6 tgizesultant with a magnitude of which of the followingoexxb0t qz n28 t36ig.

  10.06: Which of the 2d *u/ds9g vux.ar3 vvfollowing statements is most closely associated with Newton’s Third Law of3xvadgs uv*v92 /ur.d Motion?

  95.06: The reaction force ui0hzs4u cw1v+wp(z7 does not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratinpoy j58cyqg tmu/60)mg upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Ea)0/pjm y8cgtm5o qy6 urth?

  15.15: A skydiver falls d(.xq:o+1bmnt cfk*l nownward through the air with constant speed. Which one of the following choices correctly desfml. nq 1o:ckxnb+t (*cribes 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 battei h ywb.7njtne98vk5ck/ v1;jrswings and hits the j1e8n;t/ycbnjv w7 k i. h9vk5ball. 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. On top of the book is a calcula 5cgxpuv)6*ea;g ;gj+ q2k pycu(kqm7tor, also at rest. Which one of the following choices is *uk)q7exk6vpu; gcgq+ayg5j 2( mpc; 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 ex 2lwc0 4an: rphks;lr9periment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions canslrar 90;h4n:wc p2 lk the students make?

  99.03: If the net force on an object were doubled while at the same timedxxd 6qiv,vt+-y /ft- the mass of the object was halved,then the acceleration of the o+tvxdy-- f6idx/ tq ,vbject is

  96.15: A car whose mass is 1500 kg is accelerated uniformly fx z4+gy7; uarjhr+4ynp dfew16a1 g:brom rest to a speed of 20 m/s in 10s. The mau+4x jg pr1hbag4; fn16d a+ rw7:eyyzgnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of th ,gck10to )c xw;9wrmhe trailer is 4 times the mass of the wg c9w1)tkxh;0 omrc,tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following princ nt(bjy6lxx +:iples best explains why large tractor-trailer trucks gennl(txbxyj : 6+erally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a ri(. 0xv(v f /xd:sm6*kvoapg frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which stateme/ k(x mvvsr0g* 6davf:ox (pi.nt describes the subsequent motion?

  00.13: An object near the surface of the earth with a weigh 8wepnri08nqo/c9weny; y 76l t of 100 newtons is acceleratqyn0/n n l6p88ce7o;9i wrywe ed at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by hb/.- sgd3kiga constant force of 2400 N. What is the speed of the car 8.0 s after beginning .i-kd 3gbhs/g?

  98.32: A 3.0-kg block with init4i.. yl) )ytkraq6idcc* kc3jial 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 befo) a*ydckkt)q 634yc. crilj .ire coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m a+ d*1d d kxd.g(k;4/( um:ngwuzpogcacross a rough horizontal floockdn* o+a wz.d1;pudd km4 (: (ux/gggr before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horla9l-*rn6-xn ) 6o g,/v7aol xsy knwd8 0ucxcizontal surface while a person pushes directly to the right on the box wik8 n 7a/)g6d sv-ola 6ryu9,0 nnlxx-clowx* cth 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 .yn/ lzf1yud*wh7p5h5 g k yc5uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. pwny yhh5glcy*d/.5 z7 uf1k5Which 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 pa(rs+fehy7;b;nygj j n )xs.3utch of ice at a speed v with its brakes locked. It then hitsus rgbj;;(x 7 e3)hjsf+ny.y n 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 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 itsu+m; ys7v7iwtd)k+ ua brakes locked. It then hits dry pavement and sks)uduw +77 a;kym+ tivids 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 4lf 41cpmo nv7i2l(eih0j *kg brakes and skidding to a stop. How far would the car have skidded if it had been traveling twikl ge24moihcj nvp7if 4*l(1 0ce as fast?

  99.39: The driver of an automobile must carefully control each of the foib):kcq ad l p3i05du6 :c(fvqllowing devices. Which of these devices can cauaiv6d5 :d(c i q:kclu )30qfpbse 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 2400m-1+mrevo /ms 0 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s mro/+ s1ve-mmto 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horyqam.m(zp 4g/izontal 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 t qp/ y.mzamg4(he 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 of equal lengazq *v g g q,6hpp(:kt98xx5prth. Assume that on all tracks the roller coaster carts startrq9*vp ,gp8h (g5xkzxtp q6:a 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 rollerlm ki:;bksimhaapa3 -775 h;a coaster tracks of equal length. Assume that on all tracpa k:s3i;5ah 77mmbl-hi kaa;ks 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 reach the finish first?

  02.29: Assume the rollercoaste5i uvy.7emw)jv 07lg 7vl)kugr cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's acceleration at point )7 yg)vel7uvlu .75k0vi jwmg

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope which majqk.) wkl:q n: k7jj2akes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient o kanqkjjjl)2.: :wq7kf 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 pushed3j: rsy1feoy/+zzsty87 t58pzw9m q i against a wall by a 100 N force as shown. Thecoefficient of kinetic friction :/z5wz1 7mrq3t oy stp98jey8 ifzs+yis 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 mower across a 15 u9r6nbqm-tfyno j9 horizontal patch 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 relations among the various force magnitudes, W, f, N,-6rn9 ot59qb 1 unyfjm P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Which of7tnv2:q.y/ x9 zt 0 tvjdppga: the followingx j.pn0 2adtt t::pv q9y/zv7g statements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up a 8sm 1*bq;d;huppz (/ )0 bsd9tsn,cdgbqx3bshill with an increasins3s ctgb1 qdpz8pb)s;qns /bxd (9h*m0u ,d; bg speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?