99.36: What happens to the inertia of an object when5 tjimu9 ze-f 8+j)lbn its velocity is doubled?

  02.14: An intrinsic property of matter wszs-0c k8s-dis one that does not depend on the quantity of matter present. Which of the following properties is NOT an inwssd8z - 0sc-ktrinsic property?

  04.16: A 20 kg boulder re((nz0 qgc6ms 1 ntd9spsts on the surface of the Earth. Assume the Earth has mac gs1 n9d6qzmp(( tns0ss $5.98 \times 10^{24} \; kg$ 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.7epxcigt/5etq 0t. qcb n)+a + What is the magnitude of the gravitational force acting oncn/tex q0 +75+itbqta )cp ge. 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: 9xoeucp e4-fp 97emw its acceleration decreases?p:9 74 mxpee-fuc oe9w

  00.11: A certain particle undergoes erratic mot(b1kzqt bx9b4 /o9 bhgion. At every point in its motion,1zkb btxo9b4 / (g9qhb the direction 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 c;zw v2j9c j ;3qdb5pmperson. The person pulls on the string unifor m;c 35wjzvd cbqp;j29mly 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 situatigjcv/ci9/ 3c xons is the net force constantly zero on the object c 3x9/jcgv/ic?

  13.28: An object is y 2f+o r. i5micyymrn)n /,;fnin free fall 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 acceleration of the object as it is being stopped by the person? The magnitude of the object’s acceleration is a and the magnitude omrnfc.if ;)iy5 ny+/mn, 2 oryf the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of 50 N, a*qarv8mka *.vnd F3 of 70 N, acting on it. The magnitude of the resultant ofma*q v*ak.vr 8F1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newgnczuu8oeu0(qp,m,ol9mv k48b9w6 49ojjbr tons can be combine to form a resultant with a magnitudgvm4kobbznp4u6 0o(r9 8w9, 9l uu qejocm,8je of which of the following

  10.06: Which of the following statements is most closely assofc 0 :ic fu/ebrew4j45ciated with Newton’s Third Labiuc4/ ecw5r f0je4:f w of Motion?

  95.06: The reaction force does not cancel the action fov( /xh5f/ iikkrce because:

  14.14: A box rests on the floor of an elevator. The elevator is acceler7vd( 7ylfa dq qu5h9 q6ah4*caating upward. Which one of the followdla yqqh(q46 fdah5*c97a7v u ing 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 consta,o0bvx9ji ci 1nt speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on t, x0ovbj ici91he skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/tniy-p7x/s 5m s. The batterswings and hits the ball. The magnituxsnpy-5 ti7m /de of the force that the ball exerts on the bat is always

  11.13: A physics book sits fxjy teivs ,9 jtp:8)*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 f*s,e t):ypij9t8x vjThird Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class ;tb0zl 0 nqp5awere in lab conducting an experiment rena;0z5tl q0bp lated to Newton'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 for c 7g y+; 6ezzc:jl6fui,y-rewce on an object were doubled while at the same time the mass of the object was halved,then the accelerat-rlzywgc7j6eiu 6fc;:+z, y eion of the object is

  96.15: A car whose mass is 1500 kg is acci0z u,9hluu :velerated uniformly from rest to a speed of 20 m/iz :uuhl9vu0 ,s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailey/wip6 rsco)p de1/1er truck is traveling down the road. The mass of the trailer is 4 times the massp//yis 6o1ecp )ed1r w of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following qmy 2b00 lgz(lprinciples best explains why large tractor-trailer trucks generally accelerate much mor ymlq zb0gl(20e slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilograxkf:61 wmr c4om ball, giving the ball a velocity of 10.0 m/s. Which statement descc krxwf:o 6m14ribes the subsequent motion?

  00.13: An object near the surface of theiw) fpokz/6 4d earth with a weight of 100 newtons is accelerated at widf k4)/6opz$4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 12w31x,:entp3 3 levzik00 kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after ,e3ikp3wx1n3:v ze tl beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s3e49rk3eu8es ,bkiad slides across a rough horizontal floor before coming to rest. The frictional force actinsbar 3 edu49e3kk,ei8 g on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with inititysb)jnx/) t(t6d1mxl8k ns 9al velocity 4.0 m/s slides 8.0 m across a rough horizontal fl9dttx)nbm)ns (tx8lkjs61 /yoor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while al-y4,3+wphm2 q7omaf-nnq m a person pushes directly to the right on the box with a forflao2whqy+ -3 mn47p ,a mq-nmce 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 acr2 p ;blt*v n/fdp7r/ccelerates uniformly to rest on a horizontal ;*fl tv/c/p bn7r rp2dsurface. 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 of ice at a speed v with itlo- )tzhm ,0uxpr)(0 8woqgw ks brakes locked. It then hits dry pavement an- tpl k8q o)rzhm(g,xwo)w0u0 d 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 spe eg1k+t- dup1 tps6m2/+r eunced v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. ut /g rd+1-k2u6+ep sc1nemptThe 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 c rehgeaw+olh7m*;57 8q,pg dsar's brakes and skidding to a stop. How far would the car have skidded if it had been travelinpol7m ;8 5ah eh we+sqg,7grd*g twice as fast?

  99.39: The driver of an automobile must carefully control each of the foll4:(vxfiks3/5m wttgc0o y -dr owing devices. Wh/5gv4 d 0sf ywxom(tct3:kr i-ich 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 newty3hic:x3l*4x m4 vl/ ax :3ars :suwrwons. About how much time is needed to4/lcw*:ir 3xsxy: aua4vxrw:3l3 mhs 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 acromvv8.uvdpz)f6 rr7.hy s f7mp4/ 9lt rcfo k9/ss 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 that there is friction f and the box accelerates to the right, rank the sizes of these pl6k9sphr to7cf./dm8 7vvy. 9 zr)/u fmfvr4 three forces exerted on the box.

  02.27: The diagram below shows thr):c7p4 kqtdow ee roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start fro :t k4q7)odpcwm 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 e-wifc zj/qym 7)tl+fw57w4n equal length. Assume that on all tracks the roller coasteryf witm+e n7-qwfj47w/5l z)c 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 rollerku ckw+aq6m/)coaster cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cu w)+qak6m/ckart's acceleration at point

  02.40: A box with a mass of 50 kg+fracc :rm4g4 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 move the crate at a constant speed of 20 m/s as shown in the diagra4rrg:+m cfac4m?

  04.40: A 6.0 kg block initially at rest is pus-f.d;ai4 ysc nhed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of sc-dis fn a4;y.tatic 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 -qs xss+ 8-o h+h9obwdhorizontal 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. Whxs- h9b-o+wdsh o+s8qich 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. Nefvp a 9:m7b2fp/kjbbr q93xcajp+i1+ither is moving. Which of the following statements concerning this si9apifq3vcb k 7a r2+:jj1b/9+ bmp xfptuation is CORRECT?

  06.15: A crate of toys remains at rest on + 1rxbgeah3c5a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate i35abergxh1+ c s not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?