99.36: What happens to the iner1,js 4lgyj d tq7x8;ybtia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the quanti/ x(f xo-sx- u1n knxs3eaycw n6u9h522dbqs8ty of matter present. Which of thencswq3e 2kx s (-2yn1-x onh 9bsd/u8f5xau6x following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Ea7 -uzmlg/es(e j5u pr9rth. Assume the Earth has mj 9lur-ezpug( e57 /msass $5.98 \times 10^{24} \; kg$ 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 nearpr.ko ct8u4 ay.1z -rv the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sporr. pu-vazc t.ky4 18here? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its acceleratlezr1 ymtpi. /e0o.osw- dn,3ion e1typoroln d.-e3wm 0 i/.,szdecreases?

  00.11: A certain particle undergoes erratic motion. At every poi 2ldd4r tdm12+x3 yftqnt in its motion, the direction of the particle’s4d2lxt mf1q32tr +ddy momentum is ALWAYS

  17.14: A block is suspended in the duf9:v99 p/jxhg (dc7hgx 2xrair at the end of a string held by a person. The person pulls on the string uniformly accelerating the bfhg jr7g:uddhpx 99v(2 x9cx/lock 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 force ae )xnb1g:bl4 constantly zero on the obje 4bxang1be):lct?

  13.28: An object is in free fall close to the ground. A perm,2j b,ft, ukxson 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 kmu,,,b 2tfxjacceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces( ;pb6 cxl;tmr, F1 of 30 N, F2 of 50 N, and F3 of 70 N, ar b6tp ;x(clm;cting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be comb* :uxgp zev-jf/8mk *uine to form a resultant with a magnitude of whi:ue j8x*g/ ku*mzf-p vch of the following

  10.06: Which of the following statements is most closely associated with N 2f7x0b vqhv4fewton’s Third Law of Motionvqfvhx4 270bf?

  95.06: The reaction force does no:6qyl hznuf q*gl ci mw7:749ct cancel the action force because:

  14.14: A box rests on the floor of an elevator. The ele83df+y 79 owvea r.dgovator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitat.we gv39f dy8do7r ao+ional force acting on the box by the Earth?

  15.15: A skydiver fa +3jcmo5ttgg.yds+-u2du pl )lls downward through the 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 skydiverm u sgo) .jtyptld325 g+-c+ud during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 35 m/s. .mu xvnnncbj9a 9i )7sm(2+jl The batterswings and hits the ball. The magnitude of the force that the ball j7a)i(b l.n 2j +mms u9xnvc9nexerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a calculex b.qwa6 wf,.ator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force ae,wf.w6 . bxqthat the table exerts on the book?

  05.06: The students in a Physics I cl:dz.r cns6t x69wo*im ass were in lab conducting an experiment related 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?*wzs66 oxcdr.9mi:t n

  99.03: If the net force on an object were doubled while at the s6cj8jnp5ua1k6 fw2yr ame time the mass of the objecncrf uj5w1j2 py6a68 kt was halved,then the acceleration of the object is

  96.15: A car whose mass a q22 v9abs(dyi-bhd)is 1500 kg is accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acceler(h)da bdyav -qibs 229ating the car is:

  99.05: A tractor-trailer truck is tramf v; e/r;pa5dveling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the ; f a;e/drpmv5trailer applies on the tractor is

  99.16: Which of the following principles besveq g ,6c9stcg)kas40t explains why large tractor-trailer trucks generally accelera 6s qvg04s)ct,ge9c akte much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless riny-+ n4 hwz3kj4 m ire:rz251dx4nfggm k throws a 2 kilogram ball, giving md gwe+5kfni zg1-zj3r 2mn:4 rx4h4y the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weigh v:qv9 +3fgn3n(d5*nlwqmi irt of 100 newtons is acceleratevglv 5i n:3+rnm9 fnwdqq*(i3d at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant force 2o+tt65zu y.yvkr4 wiw7/ wutof 2400 N. What is the speed of the cuy+7.4 rw25otz /witw6 uykvtar 8.0 s after beginning?

  98.32: A 3.0-kg block wicg g+9rxfh r hi5q82z(th initial 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 thef9 qh85 zg+ (hr2cigxr block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m acror nd6ge0+a3e +u +exqkss a rough horizontal floor before coming to rest. The coefficient of frictek60d+ re e3na+xg+u qion is:

  09.21: A 20.0 kg box remains at rest on a horizontal surff:i phmukvf nmtf)97: ,wr4q:ace while a person pushes directly to the right on the box with a force of 60N. The coeff9ufik f:t4 )ph,m:qvf mw:n r7icient 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 uniformly tw82tenz8h28 i uid4xqo rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the8euin8 t2xzhi8 wd2 4q 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 p0yx f4you)(fqatch 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 dryufy)4 x(oyq 0f 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 :9wc (rm wfs0ygm9wlb- mq-.obrakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between o0msr-:m b-ww w9yml 9(. qgfcthe 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 tl sci2 x*mi1z-k 8fho+he car's brakes and skidding to a stop. How far would the car have skidded if it hif h+c8 2 i1lz*os-mkxad been traveling twice as fast?

  99.39: The driver of an automobile muk ;6c:ndzqi/l +zjr(zst carefully control each of the following devices. Which of these devices can calqcj+6 zzdn (:z /ri;kuse an acceleration 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 150.t eff((ljxv iyyj8+800 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ (jxjy v(t8el.f f+ i8yspeed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides :f q.:/vkq rtjto the right across a horizontal 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.qt jrq /:fv:k 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 o m) bydzn8j3+gof3 c bm3hilgkwg/db j-2n0/)f equal length. Assume that on all tracks c3/bmbo kwj+g2nb mhl g y)djzf3d-)ng0/i38the 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 coaster trr8tu wif4x j. 2rocs-;acks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlesslr4 x8.ts fo-urji2 wc;y 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 rollercoastemlnsmgiz *0 jdtqofxq7+ *1): r cartrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the directiqdmnzx*g:)fsl7 tim 1 0+oqj* on of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across thu8 kn+ vl(l7,e 8 prfv:yerl,se floor by a rope which 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 250 newton force on the rope is required to ( se8l8n+u:yklpv e,7 lvr,rfmove 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 agdu4 0/gq rmuy)ainst 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 tr/)y d mg0uqu4ime of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass with a iyu;5o)torlej7 :k c0 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 amlkrejo:c 0 toy;5)7ui ong the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a t:f/xq:a qc1w zable. Neither is moving. Which of the qzafc : xq1w:/following statements concerning this situation is CORRECT?

  06.15: A crate of toys reolu)a2 rz no 2my(yo59mains 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 sleigh2zo )mr 92ooa(ly 5nuy. What force is responsible for the crate’s increase in speedup the hill?