99.36: What happens to the ine.*f mibrqpnf y 3 lo8*j2;1vcdrtia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not dephgppf .m5 -+(zh zai7snz j)w:end on the quantity of matter present. Whic(5mazn zz f: h7wh+s.j-g)piph of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder;q; lta5tswrl b5p 1+h rests on the surface of the Earth. Assume the Earth has map1th;a+ bsl55;l qrt wss $5.98 \times 10^{24} \; kg$ 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 falb mahfmm18/:hh y q h7rc-4i+il near the surface of the Earth. What is the magnitude of the gravitational force acti :f +r 8hb7yha1hmi-m qc/ihm4ng 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 ih f q l7y:6mtx,e)t3rvelocity to increase while its acceleration decrte3f7x6: )qhy , mitlreases?

  00.11: A certain particle undergoes errati vt*na lp,9.iiqnx1 t)c motion. At every point in its motion, th)nntl ,avp 9qt*ii.x1e direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held be3mcrlkil, ,z3 (.vy ry a person. The person rz ,vlrm3y l.ic3k(,epulls 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 force to the force of the string on the block?

  07.18: In which one of the followin grt;il z5.u/kg situations is the net force constantly zeroz;k/5gu. ri tl on the object?

  13.28: An object is in free fall close to the ground. A7ohv7)/.n jxwe qrk .m 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 acceleration7.oh)kxqn re7v/.m wj from gravity is g.

  98.03: An object in equilibrium has three forcebas 9j+.nx,xms, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it ,s .j9x+bmxna. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be combine to form ,7g.nxeh(rfv a resultant w, .( x7ghnfevrith a magnitude of which of the following

  10.06: Which of the following statements is most closely associated with Ne1wf6 l; qkmy)wwton’m;l 6fkw1)wqy s Third Law of Motion?

  95.06: The reaction force does not cancel the action force because8al2gcwoj d (; eq+z(u:

  14.14: A box rests on the floor of an elevator. The elevator i0yb-1 a d/zi c)fxvyjxw*k,9ys accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational fxxw d0)bk zcav*i 91-/yy y,jforce acting on the box by the Earth?

  15.15: A skydiver falls downward through the airpd0;n(/),yvu+ar maa t 7pxu d with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to thn)y ,( mard au07xt/+paup;vde air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with asx9 2(lym47m hvxe9cf speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the bat is alwa2v4s7 xcfe9y(lxm m h9ys

  11.13: A physics book sits at rest on a table. On top of the book is a calt 0x8oj+9hx/tes.ollp) a l+nculator, also at rest. .tle h0o) t+sxp8/xoa+lj n l9Which one of the 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 con21/ho8y 7mdfab9sayuducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. Fmy s7ah8f9 o 2d/ay1ubrom this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the s u g1oqfyl :6wvevu.*4ame time the mass of the object was halved,then the acceleration of the ob1q :vl*fo.4yu6 guew vject is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest z rcnyh56a8x7by1z . rpmz8:1 (cal cyto a speed of 20 m/s in 10s. The magnitude of the net force acceler :ypn 7lr1zb6rca zx18(c5 .cyhymz8aating the car is:

  99.05: A tractor-trailer truck is traveling down the road nq7y7.8* js0uonf u+kbqht 2h. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the fo2oq q+yfs8.h *0ubh7nkunj 7t rce that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why lar )g6h(bj+usv d9 dxb:age tractor-trailer g)b9ua :d dvhbs(j x+6trucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a ) sarkri(-g(s r;24oa3gfqbdidl s 7.frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statag-2sr(o43i qgd a.lsfr7bkrd()s;iement describes the subsequent motion?

  00.13: An object near t:5 ri ahgua1 fdi,0/hbhe surface of the earth with a weight of 100 newtons is accelerated a5r1:iai0hua/gbdh,f t $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant forcr; l:e y/bgnu+7zrr+ u yd1-dge of 2400 N. What is the speed /+;-rd1d uluyzrrg n :e7g+yb of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial spr8 brkdt1 y)i,eed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acti yirk,) t1d8brng 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 slides 8.0 m across a rough-sxamvyph.k1 n 62ry) horizonk 1)r-pnmyv2x6s. hya tal floor before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a hor9ekway9 kte lbo fm0x1sv ;9*j b/,j6tizontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic frictx y6wksk0oje; / fvtb1la m je9,*9t9bion 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 ac:4qefgpz, t:- qlm0eccelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Whic4:zq,l q- pmefce:0 tgh 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 with its brake:yu4aoqaudw2y:kqg- bb .7 y5 :;annac2 0wads locked. It then hits do0an4;a2qk2u5qn y wgdyua -:::aybw bd a.c 7ry 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 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 with its braovkvu92i 5bk grr 7q:3)h9iekkes locked. It then hits dry pavii :vk35 9vkb rhe2ok7uq)rg9ement 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 slamming on the car8m1 sch /9nadv.5r jzukck .n7's brakes and skidding to a stop. How far would the car have skidded if it had been 8u crs51kjz.vm a9d nkc 7h/n.traveling twice as fast?

  99.39: The driver of an ayoj. /d+rw c. uuozad v)/p9ds)8v/zby sy42wutomobile must carefully control each of the following devices. Which of these devices can cause an acceleration in a movibdys)sw/jyz c/yoop 8 u9u/.2dw+.z)d avrv 4ng car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weightzp gm,.5t*w lh.ku+k;eel, vt of 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 the surface kgtl,e+zt5vu k e*mw .p.l,;hof the Earth at takeoff?

  07.21: A box slides to the right across a horizontal zoyojz7mf+ hjm7597k 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 right, rm7jy+5o97kh fmz7o j zank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three ro(zl7paf ca 01g- -ypn a3uhwx0ller coaster tracks of equal length. Assume thnhu azp07ca-fal ywpx -g13(0at 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 be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coas 4wzx)i e6xssowf85g; ter tracks of equal length. Assume that on all trx6w;z x45isg fswe o8)acks 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 rollercoasteicf76g io k9c:r cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's 6o9i gck7:icf acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a ropt v89winot3l- lsn2 .de which makes an angle of 300 dtvwll 2-s93.tin n8o 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 aufc k6+ ak1u7n 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 frictuuc f1 7+kank6ion acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of gn 4brypt( 4rx2rass 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 relations among the various force(by4 2xrtn p4r magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans a*tju 2lve ):qpgainst a crate on a table. Neither is moving. Which of the following statements concer:qp *l) jvetu2ning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleig: eq8k*r7ke j kp*tyg)h 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 increase in speedup the higr8kj* y)p*:t 7qekkell?