99.36: What happens to the inertia of an object wqbm ku3;enmth j63 jk4nz+c0py8/p- bhen its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the quant qqtirf c2y19+ity of matter present. Which of the following properties is NOT an intrinsic propft9rq2y+c1 qi erty?

  04.16: A 20 kg boulder rests on tmn,4cbpt 6jaq1l.;nihe surface of the Earth. Assume the Earth has mass t41pn; c inal,.q6jbm $5.98 \times 10^{24} \; kg$ 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 surface of the Ear1tf) l * r,zidffble-0z1yh ,vth. What is the magnitude of the gravitational force acting on the earth by the sphere? ri -vlbf) ey1 ,f1l f*dh0z,tzThe Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while it p6q rhbnuka-*nc: w5*s acceleration decreas*n b-r6uc*pk5h:a wnq es?

  00.11: A certain particle undergoes erratic motioeog( u708 /t gk 9x9fk:6cfwaenk l6wwn. At every point in its motion, the direction au lg7t:onfk /80ew9wk ec(w 66f9gxk of the particle’s momentum is ALWAYS

  17.14: A block is suspendkg0,bdyd bdjg g+895m ed in the air at the end of a string held by a person. The person pulls on the string uniformly acc bj,ddmydg 8b0 g9+kg5elerating the block 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 situatipe s* v2j2(yiions is the net force constantly zero on the objectj2ii ep(*v y2s?

  13.28: An object is in free fall close to the grou )96qzsf( czui)mm qc.nd. 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 magnitude of the acc c)s zc zim9mqf.()q6ueleration from gravity is g.

  98.03: An object in equilibrium yog(zkf. 6qj5+u:vj h has three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the :vj.qouh56y+ kfgz (jresultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a pztf0cxkcx/bl +)2, 8 i se8nkforce of 10 newtons can be combine to form a resultant with a magnitude of which of the followin)bz,8+n20/ets ic8kxpxfk lc g

  10.06: Which of the following statements is most closely associated with Newton’b )cjzvxky c9vv8+* i;s Third Law of Mo8zby )c+ikvvc v;* xj9tion?

  95.06: The reaction force does not cancen mu2-ndx(bkh c7w,.jl the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accel fqy bu6gv-fudh nss0c )-38b;erating upwar nb 3vd sf-u;q0-gy)8c subhf6d. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through tr/rcg 3 ikw16lhe air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydivrwlgi rk13/6cer during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of zq 5 rv3ey k: k/yqsc25usj7l435 m/s. The batterswings and hits the ball. The magnitude o5 k37qrvyes:j4q2/yszk5luc f the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a tabs i +)ip2oe)hble. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third oes2b+)) phii Law pair force to the force that the table exerts on the book?

  05.06: The students in a Phy9xoi,r3oi0 9el nip9rsics I class were in lab conducting an experiment related to Newton's Second Law. The colle99x,riopoi9 03 neirl cted 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 thl:v w0n d2y vcpcmqda a30:+7ue same time the mass of the obucw3 2can +0v d:qad0y7:mp lvject was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from re2w h4zkk/kh -w rusj /wm,a0g;st to a speed of 20 m/s in 10s. The magnitudemgw a;w4k h,wkzk /r0 2u/js-h of the net force accelerating the car is:

  99.05: A tractor-trailer truck is jmv93.xk9jlm 9:le ei traveling down the road. The mass of the trailer is 4 times the mass of the tractor. If tk3j9 jm:me9 .9ilelv xhe tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best expla 7chlo,f)8pyr ,uyg a+ins why large tractor-trailer trucks generally acceleraul c7yyf,h 8arp o,)+gte much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kc;pb4sc htw y;w5buif26 /cf0ilogram ball, giving the ball a velocity of 10.0 m/s. Which statement desbsw ypi u5tf;6h04;/wbc2c fccribes the subsequent motion?

  00.13: An object near the surj1n )ec k0:cycface of the earth with a weight of 100 newtons is accelerated at cc:0j1c e)nky $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerate4 79oe8b ygdq.q5v vegd from rest by a constant force of 2400 N. What is the speed of the car 8.8. bed o4v9gqv5gq7ye0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizontazhbe.um.y nf-m9p z :3l floor before coming 3.z:f- mye u9ph zn.mbto 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 4.0 m/s slrc08 22e,hu ufd1jwi fides 8.0 m across a rough horizontal floor be 1df2wr 2juhciu 08f,efore coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal idl5lk(+y q z-b ph2w71jgc4j surface while a person pushes directly to the right c541h2 klp+ 7- (gidqybljjw zon 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 acceleratekph0l0 j yjxnl wn38vg.i8edj8-4q3es uniformly 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 re x8je 0wihgv4e8-3 d8nn3jjqlypl .k0 presents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides acq vx h xmliinc1:v0j8527 e3awross 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 is μ i 0xa5h 1nml8viqcxe:j7v2w3.
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slidm/3si+q )ali7z b4gzcy9+ glwes across a patch of ice at a speed v with its brakes locked.qggw3+z+4 /i l)l ys7acbz9mi 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 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 slz - :ltk3a4wlw51k dbtamming on the car's brakes and skidding to a stop. How far would thtk51 wk:d43bw- zatlle car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automo59z*o usrj5b+zz91t ahgke e7bile must carefully control each of the following devices. Which of these devices can cause an acceleration br1kzzaj su* 97g9et55h oe+z 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 f9ezh00i2o00n wacxuuhu3 . zd8rz3 bis 24000 newtons. 3ucie0zn zwrh3z fd b .8o0xu09h 2u0aAbout how much time is 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 horizontal floor. A pers dwxe*psv 9:vz bn:m+ f6;-lzvon 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 right, rank the sizes of the:n le9v:s dw 6fb pzvxz*;+-mvse three forces exerted on the box.

  02.27: The diagram below shows three roller coaster trcpu )5q 3u.aufacks of equal length. Assume that on all tracks the roller coaster carts st c uap.fuq)53uart 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks of equ w1c e c-nyjz *kb72xk4:g)bsoal length. Assume that on all track 41w)7y e-kkc2:j z ocsx*gnbbs 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 :/es/k ki29gky/ amxhthe curved track from point A to point C under the influence of grav/xkahk:y k 9iegs2/m/ ity. 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 ro;flak wq22*3k*ki:avwr f 5lupe which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between k52vrlf w aka;qk*3u: 2lwi*fthe 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 100nio6 p5+ a we7c/leqs0 N forc +pq ncw5aei7/eo0sl6e 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?

  05.10: A homeowner pushes a lawn mower across je mm:x9yfqr/ds /-j+a horizontal patch of grass with a constant speed by applying a forces:+e/x d mfy/j- mq9jr 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 tazsd kf1ybis :0u-4z) wble. Neither is moving. Which of the following statements concsiuskzf-)0wd 1 y4z:berning this situation is CORRECT?

  06.15: A crate of toysm g+x46piqwl 0 remains at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is resl0x pm4 gqw+6iponsible for the crate’s increase in speedup the hill?