99.36: What happens to the inertia of an object wh 7 p*n9tqppd 4,/;)nszwosjdg en its velocity is doubled?

  02.14: An intrinsic property of matter is one that does qv-ves/+j .qy6; y)dxm pvlc2not depend on the quantity of matter present. Which of the followi2)ld vy.j m+s/cqq-xv ;vey6png properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on t2i4c uctf11x9zz f tff/ nt2-n;uvxb8he surface of the Earth. Assume the Earth has m cb ttx1f/fzi2t n8x;4u1cvf 2-z9unfass $5.98 \times 10^{24} \; kg$ 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 faongfsxa y)w t9p52i5 9ll near the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earths xo)9ai2gf 5ptw9 5ny mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to incru:kj ezhs o2)2ease while its acceleration:z)huo e2 2ksj decreases?

  00.11: A certain particle undergoes erratic motion. Atwrli8,0atl w*4ey: ge every point in its motion, the direction of the particl*al ,ew 48 rgy:ie0wtle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held uqvf78vsg */r 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 four 8 7g*vvfqs/rce to the force of the string on the block?

  07.18: In which one of the following situations is the net force con pkn jrw2w489ohut,5nstantly zero on the ukw4, ptjorn58n 2hw9 object?

  13.28: An object is in free fall close to the ground. A person intervenes7yy9-*-3h4qi1jm zb ufac c 38wcm pen0boof0 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 ma cj yb1z--3am 7n43 *9cbyi80che fou 0wpmfqognitude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in eqr4 f4ek dv.tbz1js 99 o;ytuk,uilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude 4d9f9,b v .jue1yr4zktotks; of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a+fwji3d qe: ez m9:l84d)tcy i force of 10 newtons can be combine to form a resultant with a magnitude of whichq) 3jclw:4ifdt eeyi 8md:+9z of the following

  10.06: Which of the following statements is most closely associatwv:n8 2q;es6al w1dxbed with Newton’s Third La xd:n62swwa; 1 bql8vew of Motion?

  95.06: The reaction force does na95 c4cwmzy o0ot cancel the action force because:

  14.14: A box rests on the floor of an elevator.be *9k76es yyuhsqu5,;u d) pa The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on bh;u)u5*psu7 6qksa ed,9ye ythe box by the Earth?

  15.15: A skydiver falls downward through the air with constantj-hcohthn.o3y a*y :mmf07 -c speed. Which one of the following choices correctly describesh-focjaomh0*3 c.7 ntmyy-:h 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 ysqa cm*qq+,c ;l81ir.sd0dj zjp3x- pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that thec*d0rdca1z-jsyim. +,qsq;3qj xp l8 ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is w u1j4mr-xny1ynh6 .v a calculator, also at rest. Which one of the4.vy1mjnh 1un-w6 yxr 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 lab conductcr(nc 00l:m u6bf 9uscing an experiment related to Newton's Second Law. The collected r0 l0u smucfc(6c:9n bdata were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while ate26etzux6xh+k :,u dl the same time the mass of the object was halved,then the acceleration of the ob zhx tku ,le6:6eu2d+xject is

  96.15: A car whose mass is 1500 kg is accelerated unh. x:sghmh ;r5iformly from rest to a speed of 20 m/s in 10s. The magnitmh;:s. hh5gx rude of the net force accelerating the car is:

  99.05: A tractor-trailer trs1;oaqd8 c54cg kx 0x); dn :gzof9pliuck is traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates fora 5;zn fi0:4dcxs8xlo )opg kqcg91; dward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best ex1c6fv+lqc z ry9vi),1 e- beibplains why large tractor-trailer trucks generally accele ciz,v1-1b feqivl )9cer+yb6rate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kil+8n - hv/ipf(ame+b ix*v:lkzogram ball, givil/h+k vfbe:zxma8*vp(n-i + ing the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface ovbrk /yzx9 eys48+r 7cf the earth with a weight of 100 newtons is acceleraerx b8 /ryscyz7v 9k4+ted at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kgv7l rjc;z o-7-g/dv s ky32awa is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginningv;y csrg k/j- z-ov7 w3adal27?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horcw)6o ;ju e(jjy:.ld aizontal floor before coming to rest. Tl6:y o)jw.j; (jcd aeuhe frictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slidefs7 vys bq z+65m+(pfms 8.0 m across a rough horizontal floor before coming to rest. The coefficient of fricb 6sms f7 f+v(p5+qmyztion is:

  09.21: A 20.0 kg box remains at rest on a horiz /(kzj 6zpwmh0i j+/stontal surface while a person push j0 /skpzwz+h(/ 6tjmies directly 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 tnfww7 ;oco ( tvnk8e0 uvvo*8(u:ee(ro rest on a horizontal surface. The block travels a distance of 12.0 m during ne( *foout 78r;(:(kvc0wvweou8ve n 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 witapi ) 74if0iy4)zrwr28o bbp mh its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dri rb4 27 a y)b4zpwprf)o8mi0iy 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;lr(dwfc:- ;iy 4 uf-4fhivh r of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. yi; hc rfdi --(ufhvlf4;4 rw: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 bra os ;*+3kdzsmkkes and skidding to a stop. How far would the car have skidded if it had been traveling twice as fastd s mk;z3*s+ko?

  99.39: The driver ofhy +gipl15/t7c5(oaxz6xe jj an automobile must carefully control each of the following devices. Which och1 /x g5t+jpy7 oea5l(zix6 jf 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(hxq cd;wg9n / 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near tc/ nd(ghw;x9q he surface of the Earth at takeoff?

  07.21: A box slides to the right across a horil9 *nz,bw a3-1ly*w +kmjb2oygro+fpzontal 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 righf9m rb 2ly wn +paoz1blg,- ky3+*oj*wt, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coastt z h;)5g qd9ieow/nocmbd16* er tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at o*etb9q/dgow 5cdm;z )ni h16the 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 ofdlwh;i 75 0y0rrjm 80c2q0ldou zw*vn equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionduw;inmry5cvqr 0 20h*7o j 008d lwzllessly 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 rol cbkftp6xi 8fx.y0t1 3lercoaster cartrolls frictionlessly along the curved track fk. bx38fip0x1y 6ctt from point A to point C under the influence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass ofxc pkq cpq7n8/6+1o pw 50 kg is dragged across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would pqq 8cw6pnopk+x7c /1be 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 diagram?

  04.40: A 6.0 kg block initially at rug9.h7g ka1 a27 ,bdru5vtcmeest is 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 actg.ghe ua5,madu 1vb792 kctr7ing on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mowlvx,72 f*9y;xypp ylber across a 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 relxyp b ,l;9y 2lx*pyv7fations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans ag xa -3oh r(o*vcwuwq*-ainst a crate on a table. Neither is moving. Which of the following statements concerning this situ-* w3o(-hvrx*wqo c auation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the s *oze7c/ o:1ny-jnv coleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate1ncco/ny ezv7 o-o*j:’s increase in speedup the hill?