99.36: What happens to the inertia of an object when its velocity qn3a9s/0a f a.ngkd xc q,-y/mis doubled?

  02.14: An intrinsic cs1,pqrlk 4 4vproperty of matter is one that does not depend on the quantity of matter present. Which of the following prope1l,spk44 c rvqrties is NOT an intrinsic property?

  04.16: A 20 kg boulder restng ,qph*c t,5ns on the surface of the Earth. Assume the Earth has masn pg h,ct,*q5ns $5.98\times {10}^{24}kg$ and $g=10m/s^2$ . 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 Eafn-i5 kpdhm5*,3nsjdf : h+gvrth. What is the magnitsgf5 p+5-,h *idv3h jkf:nmndude 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 velocs.5y2 ah9xmea ity to increase while its acceleration sah2 e.amxy 95decreases?

  00.11: A certain particle undergoes erratic motion. At every poia ).rnhz43jq ;v +dzfvnt in its motion, th 4 v .;)+vqzj3andhzrfe direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the endxm (v88zp1rq. n4 9q qyalph)l of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of yl)pq8nv z 4 9x8 pha1ml(r.qqthe 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 constantly zerom92/v9 srktlg) h;dchah )yp, on the objed h9pm)cls,y;gh/t9v k2 ha r)ct?

  13.28: An object is in free fall close to the grounknkl 983bz)n id. 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 mk)n3 9k8n bizlagnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, 6h13i2olgoy(ul- sds F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the red3 i(s ohu2ollgsy6-1 sultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to form a :7(ymjq//dy jyr10 i 7 klxcce agj+j7resultant with a magnitude ofay/y jmrc + jceq/77g k:07xji(dl1yj which of the following

  10.06: Which of the following statements is most closel /3w gw)tuv,/ze8 wtyjy associated with Newton’s Third Law of Motiote w3t/ y8u/z,)vw wgjn?

  95.06: The reaction force does not cancel the acti1b n2+vjhh d;vxvi)0p on force because:

  14.14: A box rests on the floor of an elevator. Thefp7 i0tbt8 mwf1j32s l6 t1bfo elevator is accelerating upward. Which one of the following choices best represents the New j7bfo1 pi6s8b20fm3lw1 tfttton’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 wit6q6 p)+/nr- vabp ywgyh constant speed. Which one of the following choices correctly describes the N/+ )bqnvw g-y 6yrppa6ewton’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 mr fe1jv.qmqh5(4kl5 l /s. The batterswings and hits the ball. The magnitude of the force that the ball exerf 51(h jl.m4q q5vklerts on the bat is always

  11.13: A physics book sits at rest on a tkke76xd qi)m3 gib*s3able. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Thi6dkm)gbx73e 3i* iksqrd 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 w: a4e.+p3k 0 rrgdo7usnvg j:fi,p.j8+uhu mconducting an experiment related to Newton's Second Law. The collected data pea,fvkp8u 0run+4md : h7.s +ju3gw r :go.jiwere displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on anrhr)ho odsa5 p/,q *.s object were doubled while at the same time the mass of the object was halved,then the acceleration of pr,h/5s* ) oqdh.rsaothe object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a speing;ymnc/z o20ztj 8 :ed of 20 m/s in 10s. The magnitzgy: co;8tz2i /m j0nnude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass 1a -xu 2y0rgytof the trailer is 4 times the mass of the tractor. If the tractor accu tx -a2y10rgyelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles bodzi ,dv- 9g)shx+ug1est explains why large tractor-trailer trucks generally accelerate much more slowly udzg v,)9s1hdiog +x -that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kk)v :q2f uzmhke4 3ev)ilogram ball, giving the ball a velocity of 10v qe f:2mzv)) khke4u3.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the ( qb5z-ieqyj)earth with a weight of 100 newtons is accej(e -zq qy5)bilerated at $4m/s^2$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated eq8( ej htgx30from rest by a constant force je(eh g8xt03qof 2400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with iniyqme:g:/b ggo8z( liz+) so,otial 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 before coming tigo s8 y,g/:qlgo)+bz(:zmoe o rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a rough horizorz68n, hwa,c 3zpbc9fntal floor before 3z69fwc n8 rcpabz,,hcoming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box redwdb ((k 7pr lu7)b.fj/3pmjdo.a c7lmains at rest on a horizontal surface while a person pushes directly to the right on the box pk.(p.mj urld b3/d ()f 7j7 b7odawlcwith 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 movg(zpsle t+ o.td0i8: cb;3 yosing at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choicetl8p y: oeo;0gdtcb+si3sz. (s best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass ,qizntzz- ;. lm slides across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kiz lzzn;. iq,-tnetic 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 +c qf3numbc. oy0:marb(7vo+ with its brakes locked. It then hits dry pavemo+.:bynv 37c roq 0 (m+baumcfent 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 speed of 2v, it would have skidded a distance of

  04.32: he driver of a carpv*j*a3 j .tre makes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skiddj.*rpj t 3av*eed if it had been traveling twice as fast?

  99.39: The driver of an auto.98 ju7wvav*7+bp h hv skbh/xmobile must carefully control each of the following devices. Which of these devices can cause an acceleratiobv 78as/vvhbph*9 7j ukx+ .whn 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 240i; lcrntore8uix//25a x3mrss7s 7 /n00 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near x/ alu7/ cmn sixsri753s nreot82 r/;the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floorb/y:(xqapc2 zt+. azs. 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 q. atb:+2 (/x saczzpyright, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coast/qzj zy 0g(q/1, cc9z;zrfynuer tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlesslcyquc/f/ rqz(z g, 9yj1z;0z ny 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 st8 :(/uj2mkfh sl vy:lhows three roller coaster tracks of equal length. Assume thsmuv(:fl8 :hjk/ t2lyat on all tracks 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 rollercoaster cartrolls 5o0ji7( 5ela b*)2nzv uw4sa4cggfdyn7 mzb /frictionlessly along the curved track from point A to point C under the influence of gr2mfi()5 b 0/ 7bg45na4nazvsd7ley ugco zwj *avity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the fl+ f7po; cre2muz) kg6qime07woor by a rope which makes an angle ofef u7 +qzc6;7mo 2wpg0reim)k 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 diagram?

  04.40: A 6.0 kg block initially at rest is pushed against a wall by a 10019ovghyc *k5te,oa2 j N force as shown. Thecoefficient of kinetic friction is 0.30 while the coeffi*2vo5jay e9c 1,gh kotcient 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 nx)/bv-qv5 tx 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 bxq 5)n -/tvxvthe 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 mg4y8z2s n xr7pf)jth/oving. Which of the following statements concerning txf7hpzn8rs2 4/y j g)this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as t+i:6z9qx8a ywnjsjw7pn a 0*bhe sleigh is pulled up a hill with an increasing speed. The crate is not 9n:i6sa7wb*yz anqw0 +pj 8jx fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?