99.36: What happens to the inerg8 h.v8d bkwc2tia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does n,y4v vo dp+0tdpq9-vcot depend on the quantity of matter present. Which of the followin-4d0+c p vt9,p odvyqvg properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surf3v)f7uz v+ akkmc)+vkace of the Earth. Assume the Earth has mass vzmcv)k 3u+ )f7kavk+ $5.98 \times 10^{24} \; kg$ 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 inc i(gf-7(df1.jtb ivg 0wp )nh free fall near the surface of the Earth. What is the magni7p- bvcf0 ii h()1.fgd(tjnwgtude 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 velocity to increase while its acceleratih 9vqme6 xzt2kc0e0c 3on decrhz2 q09 t3xcemck ve06eases?

  00.11: A certain particlem*.sd1f/,a 8bndjo 6bnu9 (z tws9mrf undergoes erratic motion. At every point in its motion, the direction of the particle’s momentum njso8 brf9 n(9b/ d 6zt*w.su,a1fdm mis ALWAYS

  17.14: A block is suspended in the air at qvc wfm3k0:yfemi4c: 6opd qgyc ,+-( the end 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 the following choices correctly identifies the Newton’s Third me:q6cq+f4( vpy03c w:,gfyd-m koi c Law pair force to the force of the string on the block?

  07.18: In which one of the following s:- pcszyu+f1 k5pb9czdq ;gi6sw2k,x ituations is the net force constantly zero on the 6qk i1pzg x:cyf 2cz9s5w+-,ps b dku;object?

  13.28: An object is in fp9 b i)/cbn4n*fdynq 5,tvbj3ree 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 magnitqfj5)nt nbcn9i4*3vbbyp d ,/ude 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 eqzyfhsc8.u(si33vw 1muilibrium has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. Thehsv8u.3m 1z yscfw3(i magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a forcg, lj,1h/j 7i u4izrfee of 10 newtons can be combine to form a resultant with a magnitudh fi 7g14u, i/zeljj,re of which of the following

  10.06: Which of the following statements is most clovm l)m 8bjj .wbi.hu7 r7/8vwmsely associated with Newton’s Third Law of Motion8w..mjvmj lb8/hr)u7 mvi7bw ?

  95.06: The reaction force does not cancel the action forc3itssrx 6 r/8ne because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratiwynnl 3iw:,8rb8tw: r ng upward. Which one of the following choices best represents the Newton’s Third Law pair force:l:n83,rntwwyb i8wr to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. 29evgahh 9.afx7n+ w p Which one of the following choices correctly describes the Newton’s Tv+ 9ngha.2a f hpxe79whird 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 m/s. The b k z,uod/sf(p r+/alq3atterswings and hits the ball. The magnitude of th+lqka (r/po/dfs3u ,ze force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. Onuda5*k*pysq * top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the book?q **a*s5pudky

  05.06: The students in a Physics I class werb2)8h+q zzxzqb8 xfrh 1v1gh.e in lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From g qx 1hhbx.+1z2fbzhq8)zvr 8this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the same tidi,oxp uwfl q*2x2 ,2fc,np z4me the mass of the object wxlni,pp,24,of2qwf2ux*c d z as halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformlypwajz9r . 7h.zit8( isdte.;y from rest to a speed of 20 m/s in 10s. The magnitude of tht(r sy 7w; 9zi.hp.te8j.zidae net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. a37 d e7v7ud;w59ba punpry5gThe mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, tg rd;55p a7 7byp w7u9ndu3veahe force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-21uxok5jx pn3 xy wp1*trailer trucks generally accupo 1pjxykxw1* x2n35 elerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frich /rwy-w /s-smtionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s.-/ w-rsws m/yh Which statement describes the subsequent motion?

  00.13: An object near the surtwa2 ), ekd5jnface of the earth with a weight of 100 newtons is accw2t5n,kae )dj elerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose ma/ davk jq;nel1w71d p/ss is 1200 kg is accelerated from rest by a constant force ofk/1wldjpvnad/1 7 ;qe 2400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides acx 1 n4+7muc5lvc 1;gbo9nhsu sross 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 nhg17c5mnx9 bsuc 1 osv4;u+lcoming to rest?

  95.38: A block with initial velocity 4.mrrueh3ki a- lb*/+ 2w0 m/s slides 8.0 m across a rough horizontal floor before coming toh w/ b2 +3urkae-im*rl rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pu4 iei 14t4ww+;lsd0a lvhz*im shes directly to the right on the box with a force of 60N. The coefficie;i+z m4lhl4 0t*vaiwesw 1 di4nt 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 uni fir9f;vuzm cz141f +3prwmt7+5g rt kformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following chork r+p1t;74guw3 friz+ c mfzv15 9mftices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slidp;7j q;zs/f;sgr (d vbes across a patch of ice at a speed v with its brakes locked. It then hits dry pj;d7ssb( qvpz ;f;g/ ravement 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 mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides aw )7 nz5l2chu3zben; hcross 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 kinc;zwbhhzn un32l57 )eetic 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 byqtu u gs ljo.*owytf/4eevf/(s7 6q4, slamming on the car's brakes and skidding to a yqq goot7ev4u s/wu (,e.f/j*lt4 sf6stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an a5gpkpf,/1 x rxutomobile must carefully control each of the following devices. Which of these devices can cause an acceleration in a moving1f5 r/ xkp,pxg car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weight 4:8z jxj smibnq//jjpxrl1 iez 8 /z98of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed frjqinb xp9 rmzl1/z sz4/8 j/ :j8e8ijxom 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 horizontal floor. A r o 9:q:(xyt u1r5mffy7u4y s1.pvhmzperson 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 thxu1.1vq57 y rofpm ( ztshmfyy4:9r:u e force T. Given 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 l rp5: r sdj3e,,m:uw/c:tjjg roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the fini:rces:pg5l trw3jmjd /ju ,:,sh.
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 beloq8y 20o tcohn 08oyek*w shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster c 28ocqeo0kntyhy*o08 arts 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 curved tr72jy .-yov6rd ikt+xz m+ ltc,ack from point A to point C under the influence of gravity. What would be the direction of the cart's vytx,.om+ y762ri-j tl+ kc zdacceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope ww 6q5dpi/c ,t0-zylnl0yu lh: hich 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 2 6 cih0yllu-z5ypd0l:t,w n/q50 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 initia+95)xi kccw2u6vz doi lly at rest 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 k2 i+vzw9xic 6cdu5o) 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 horizontal patch ;(on 4yfhml m(of grass with a constant speed by applying a f4f myo;l( m(hnorce 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 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 mo6+cygoyk-z)a ving. Which of the following statemc+yk6aoyg )-z ents concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as t6dfau ,:rfz k.fsztx23+g9 kjhe sleigh is pulled up a hill with an increasing spkxtu+z,6fk9 fd . 3jz:as2gr feed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?