99.36: What happens to the inertia oe/ lussrxa5 ::ih*9v xf an object when its velocity is doubled?

  02.14: An intrinsic property of matter is onzng4 a4w w7 ;wr2io6nle that does not depend on the quantity of matter present. Which of the 6zr4 wnaw7nwgl42i ;o following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests o plmn,4zi3j n.n the surface of the Earth. Assume the Earth has mass mn,3l 4.pjnzi $5.98 \times 10^{24} \; kg$ 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 sij-ts+t0 i- hhurface of the Earth. What is the magnitude of the gravitational force acting on the earth bt--h sh +tiij0y 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 its accelera1fo9 2,idp8fnpo 16h rhf*rnmtion decreasesf1 mfr8h9 *nohi6 d1,ppor2f n?

  00.11: A certain particle undergoe2lws:)x7e+mvrkd1r m s erratic motion. At every point in its motion, the directi:kv7dme 2 +1 mwr)xrslon of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at thehyk-3mwv)ryml 9c :+g end of a string held by a person. The person pulls on the string uniformly accelerating the blck+):hrmy3 y9-gvl mwock 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 situations is the net uja8eddgq 6)*force constantly zero on the object?d gdj6qeua *)8

  13.28: An object is in4 k**lxllqk)qgd cpv/ m;fo3 - free fall close to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following stateq ogkl*c3p*lvqx ld-k )m4/ f;ments 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 equilibrium/ey 6tkf7ij *jgdyh58 has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and 6/ k7y*djey5hgt jf8i F2 is

  01.07: A force of 6 Newtons and a force of 10 newd)ab*tc9kk8:/ vesk ptons can be combine to form a resultant witksavd *c98tb /epk )k:h a magnitude of which of the following

  10.06: Which of the following st/8vj etwy/xsmarm:o+(i ft+2atements is most closely associated with Newton’s Third Law rajf wte2tiomv + (ys:/m+8 x/of Motion?

  95.06: The reaction fov9m7ejt ;(tukoh5 tk8rce does not cancel the action force because:

  14.14: A box rests on the f pe5eood yw+( l4k2tydowvpki(.(3ku7mw5: xloor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force yw.pv w 4(dte2wk lukpxe(mo(koyod35i5+7 :to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constayxch t,f-ek-tt2ltp,r c.l 9 0nt speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistan 2lxl-9,kpyehtc0r, t-tc.f tce acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. The batters; 4ppz 4xqpk;ld5s5hx2-ts qhwings and hits the ball. The magnitude of the force that the ball exq5 -q4s2zltx5h hpp s 4k;xd;perts on the bat is always

  11.13: A physics book sits sfjcrx wc,hrp* b3;,*qu2iz0 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 Thir2jrf iu*3,sz0r *pq,w;xc hcbd 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 experimen48jxo)oyx0xjwq0 1xdt relatedx 1o0d)joxxyj x q0w84 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 force on an object were doubled while at the same time tundmdei)27nzb4 x m5)) 2.rtegke9ul he mass of the object was halved,then the acceleratio uxlee5nm7un4)ke)d9md. )bt zrg 2i2n of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly f n ouxe)3n5c0e i.zih+rom rest to a speed of 20 m/s in 10s. The magnitude of the net force acceleratiniuozni e0h.e c 35+x)ng the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of xzpef xq7ppqv)z pg6 g5v2p 58pv- k()the trailer is 4 times the mass of the tractor. If the tractor acceppq p)k)vzv f5g265xxpe7 (q8 -pgpvz lerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best expla;lr u x5lbi68+-v gplains why large tractor-trailer trucks generally accelerate much mol5 v6i ap8gl-lx;r +ubre slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kbvb7nv):9i1 srudx6r i-bkyh k7 6a8rilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?6k) r1rnkv 6sa vi:b77dbbx8h y9i-ur

  00.13: An object near the surface of the earth witgvc.y ang g4 su.,vh*s-7 +wsoh a weight of 100 newtons is accelerated at ,vn gs- sc*ag.ug7+hov4s y.w $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant forqut+i9 y e- s3dzdp0b9ce of 2400 N. What is the speed of the dt+9qespd yiz0 -9bu3 car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4v1b+0)fy 2w qgxw( nbx.0 m/s slides across a rough horizontaw)2q +n0x(1 wfbxgv byl floor before coming to rest. The 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 os.,(j0bqa e9lbq 4g x4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. 0esba .qql4( o9x jg,bThe coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pus2 y 9 pekbs7qedl4y,h,hes directly to the right on the box with a force of 60N. The coefficient of kinee7l hs9,dbe,p4 y qk2ytic 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 unifor7)njdo 8z. lkfmly to rest on 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 fri 8)nz.fklj7d oction between the surface and the block?

  00.21: A car of mass m0 2invay *-w cwm30xeh 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 kinetic friction between the tires and the dry road ishvw* i23e y-0 mxnc0aw 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 i*srfrwr;x)z 0dh1(vr7azr7 t6 jj x.mce at a speed v with its brakes locked. It then hits dry pavement and skids to a stop irs7xzx(*)rfhw60. r7v r ;dj1at mr jzn 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 mp4g:cc2 2xnql2j3sa uakes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had up cxl3g2a2nqj4sc:2 been traveling twice as fast?

  99.39: The driver of an automobile mu1-) 8ki sq diuu;dzc0tst carefully control each of the following devices. Which of these devices can cause an acceleration i s; i )it0dkuqu-81czdn 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/e;v-r 3mjti pkeiuue(2 :*t m 15000 newtons is 24000 newtons. About how much time isp /tium3*ikevm;e trej- (u:2 needed 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 horizonta 7i6*vttmr87czxog2 vl 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. Given7mr6z x2vt 8 oivg7tc* that there is friction f and the 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:b8edco :9( femwdq9 l of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and movc dm: 8bd:e9flo( eqw9es 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 showssx,csoosk 2 ,-pon-tu5xekk:4/o b g: three roller coaster tracks of equal length. Assume that on all tracksk-pxg : 5 ocuso,2,s bs/-k oenkx:4ot 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 frictionlessly along the cs*(6pm 7my3egcs eqw -urved track from point A to point C under the influence of e(6w7* s-me pg 3sqmcygravity. 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 floor by a rov,4zff*)mep 6ffq/ih0 s r i1gpe which makes an angle of 300 with the horizontal4fs61i* p ),rvf iefhg/0fz qm. 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 pus /agoefk ;z1d,hed 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 1 second? do g1ek/;,afz

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grasr;r;mrq-to p+f ,x4 kvs with a constant speed by applying a force P. rop+k-v r4t;, ;rxfqmThe 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, P is CORRECT?

  06.14: A book leans against a crate of8k 84jgvsc.2c t6fys (s;z czn a table. Neither is moving. Which of the following statements concerning this situation8 gc8zs.6tfyc4z kss(f 2;vjc is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh asunlg-0/nx b5x the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s incru5lbg- n/nx0xease in speedup the hill?