99.36: What happens to the inertia of xa8z7;b vb ;.yn5mrbv1)kn1 jpyuy6 pan object when its velocity is doubled?

  02.14: An intrinsic property of ma ,da.5w+x-ixg;yi+fikb- v,y bt),a8gx fep q tter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic dia pwbxg,yei)t8b ,5k.+, fqxy; a-g f+ix-vproperty?

  04.16: A 20 kg boulder rests y3 lim;/ 3q+ndtf)pfpon the surface of the Earth. Assume the Earth has mass )/mfp3p3i + nfyqlt;d$5.98 \times 10^{24} \; kg$ 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;9kajkr*l+yx:z * 7e (kf pxyc is in free fall near the surface of the Earth. What is the kfap:z 9(cek*kj+ *x7 xlyry;magnitude of 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 velocml9/: esc wrn2i6 -k9yg- fdvgity to increase while its acceleration dew :c-96fgerv - sy9k2nmli /dgcreases?

  00.11: A certain particle undergoes erratic motion. At every point in its motiku7 a8burw qxz3z;c0 5on, the direction x3 0q7zz8uru;w abk5 cof the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a person. g)2 5atcpz2xq The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choices correctpq5 2zt xca)g2ly 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 constantllv n0g7usco 8*y zero o0scu*7v8lo n gn the object?

  13.28: An object is in pa- s .2xw:6 3nvghyigvx, cc mt.4hc;yrh.+sfree fall close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following staap 2 +: i.xshthrw.. vcc-4 nsyg 3mxhc;g6,yvtements 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 of the acceleration from gravity is g.

  98.03: An object in eq+a:icqn :w/rdzyno40uilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resuy: rn ac0qzwni/o: d+4ltant ofF1 and F2 is

  01.07: A force of 6 Newtons and a forcm8im:eh y+)g ve of 10 newtons can be combine to form a resultant with a magnitude of whic)mie:vhg y8m+h of the following

  10.06: Which of the following statements is most closely assr4und /cy rpc4 c58t3sociated with Newton’s Third Law of s48/currc ydp5cnt 34 Motion?

  95.06: The reaction force d xpkfuq9v50 r1v-/ qmy)m- uxkoes not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratingqy (v(ifh p(z1 upward. Which one of the following choices best represents the Newton’s Third Law pair force to th ivq(yf1p((z he gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. z:v0iqey2gxi4tsc+8 pky ;7j Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acci8zigsp y+qje x7:k4; 2vy0 tting on the skydiver during the fall?

  06.08: A baseball is thrown *t37dzuuayq /ab vu -4,f1vje by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the yj7uva4d ,z vt/-ube3au1 *qfball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On t6 rqpz(n06oadop of the book is a calculator, also at rest. Which one ofq06z6 (n oarpd the following 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 labwweg g(87+p, jybrx(y.g j/ye1gq: pq conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can thegy.jx(jw/ 7q:rpg 8 gpwq ,1y ye+(bge students make?

  99.03: If the net force on an object were doubled while at the same timi m 4)a,gyj4vxz 00wgee the mass of the object was halved,then the acceleration of the 0yx0 4gmj ,)4gwzaeiv object is

  96.15: A car whose mass is 1500 kg is accelerated uf1/l2 j4mof:i3t e hgqniformly from rest to a speed of 20 m/s if 24:h/o elgjiqf3mt1n 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of tam8n yu*idd45 (jks6qhe trailer is 4 times the mass of the tractor. If the tractor accelerates forward, n (6 u5ddqikjmy4s8a* the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explain-e9b3 hb )yvq4uf 4gu(4 3ddc kq2tdffs why large tractor-trailer trucks generally accelerate much more sloy v b (dd4hkqugfcf)-e2 4943ft3bqduwly that automobiles?

  99.19: A 50 kilogram skater at res pvr6 u8az*/xyj9;dltt on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity9dp 86yaj ;r lt*xvuz/ of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 1e 4y+ltyb757saxaxj2emx9 6d 00 newtons is accelerated at 77xyla b4t+9je y sm2d5 xa6ex$4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accuxck74zl 0h;o rn4j2selerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after be l7sh4jxz o2;4ku c0rnginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a ul-j-ik k:1ozh kx0z-rough horizontal floor before coming to rest. The frictional force acting on the block is j zhi--l0kk :oux1 zk-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 yw4a4+jh o6cp 8.0 m across a rough horizontal floor before coming to rep6ohac4+j4w y st. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a pers+4.pslpq m:qi on pushes directly is+p4l.:qpqm 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 accelerates uniformly to rest onjp1 ww2u3rq/bmp0ryr 5 hel46 a horizontal surface. 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 they41w3ljr puq/e0r 5rp6h mb2w surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v z8f2, -s5vlfgi vpd ew(vm4 a-with its brakes locked. It then hits dry pavement and skids to a stop in a wf-(8sza5 lep v vm-vdf2g,i4 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 its ejum2: h4 1n, t8joy cp;lgws3brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the d38 ;j2ht4wen ,lpcys1mj:go ury 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 bragio;n/o5,yxtf7 mke7 +3spe tkes and skidding to a stop. How far would the car have skidded if it hot,soypk5 f+ ;/nit7e3 x7megad been traveling twice as fast?

  99.39: The driver of an automobile must careful gui/k8ra9 k1lly control each of the following devices. Which of these devices can cause la1r uik8g9k/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 ecb 3fn-t; e+ynewtons. About how much time is needed+tf-;b ey cn3e 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 to the right across a qh1 o 5eft)f jw+/mkf)*w9civhorizontal 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 w/5ie )t9w1o q+ )hffk*cjvmf right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of equal lengthxmb)6+ g ka1vt. Assume that on all tracks the roller coaster carts start f+1xktg6vmb a )rom 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 sh(i0oczhgmd iq9 )h4sd1 ion( 4ows three roller coaster tracks of equal length. Assume that on all tracks the roller coasdn4i (0sci1 mi(dgzoho9)4qhter 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 rollercoaster c orznr3) fk zc(ae+x0 pjfa*/*mwon 5-artrolls 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 acceleram*e5 n(xwfro)rfkop* zzcn 0 +-a3j/ation at point

  02.40: A box with a mass of 50 kg is dragg1db ea;zi t+i* x3gbiyl84k:jnd.1 d ted 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 del:id a;i*.i+18x knb43yt1tz jdbg 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 -: tmw9x/tstcis pushed against a wall by a 100 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 friction acting on the block after a time of t: mwttxc-s /91 second?

  05.10: A homeowner pushes a lawn mower across a horiz km29fw/t2e,expbf /montal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not neces2k be x2e,tfmwf 9p//msarily 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. Wh +qty7j .on3maich of the following statements concen7at.+jo3m qyrning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is puecoe6p t1t7ds0e) fs0 lled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hil0tt e)dep0se76 sof1 cl?