99.36: What happens to the iner2q;pepf u:d5x tia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not dependz ;w w1mex dxha9,;(wb on the quantity of matter present. Which of the following properties is NOT an intrinsic propertyw dxmzab 1x,( ww;9eh;?

  04.16: A 20 kg boulder rests on the surface of the Earth. ujw3v xr:uh0bw17z3qAssume the Earth has mj17 3xwvub0u :qrz3hwass $5.98 \times 10^{24} \; kg$ 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 u 22tm 3f6g j9wl*s 1lagy1vqrthe surface of the Earth. What is the magnitude of the gw2y1aj2lv1lrt ugg9fmq3* 6sravitational 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 ve t 716t2k y/8gemzqctynh er).locity to increase while its acceleration decreas yr )qg17tte2hy zke/tn.m 6c8es?

  00.11: A certain particle undergoes erratic motib2ixix.i 1gx4f 10va von. At every point in its motion, the direction of the particle’s i1x xb0vxi iv 1a2.4fgmomentum is ALWAYS

  17.14: A block is suspended in the air at the end of a stringd4 -fmqtp wud9b1+x6mu-g it) 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 Law pair force to the force of the string on uidb-)1w4tumf dxtmg-9p+q6 the block?

  07.18: In which one of the following situations is the net force constantly zeroj8 ultfp6t+nto *;g0o on the0opfto+ j 86ngtlt;u* object?

  13.28: An object is in free fall close to the ground. A person f4jz n+9cx7md intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleratio9m7dn z+ cfx4jn 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 equili v3: q7ct4zt2z,b ymuau8c0pzr zp23p brium has three forces, F1 of 30 N, F2 of 50 N, and F3 ofztp2834rb0c 3:pp avqc uz2u,m7tz zy 70 N, acting on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtfg3*me:th g5sons can be combine to form a resultant with a magnitude of whif5g t*3h e:gmsch of the following

  10.06: Which of the following statements is most closely associated with Newte/vnm nf0e-p 3on’s Third Law of Moti-nv3feen 0/mpon?

  95.06: The reaction force d vs g3qex/j0m2oes not cancel the action force because:

  14.14: A box rests on the floor of anol.791yje f;gw u*n sh elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force actinge sl9h ;gnw.uojy 17f* on the box by the Earth?

  15.15: A skydiver falls downward through thwsbr16pis;h fi+ 9,b *yh-okl e air with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair forcsw+o6-si fbrhb;9k,l* ihy1pe to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher waf1fcq16xo9p 2dmst x44udxei y70w7 q5fc- mith a speed of 35 m/s. The batterswings and hits the ball. The magnitude od5sxow9mfa 7dfc y01t4pficm7uq x-q2e x6 14f the force that the ball exerts on the bat is always

  11.13: A physics book sits yj )5l-/dx gvuat rest on a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’x/l)yvud- 5gjs Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class z b s6.fr15nvuwere in lab conducting an experiment related to Newton's Second Law. The collected data were nb .v1su56rz fdisplayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net for0ivt1vwzhiuo m9 -n 289i:g fbce on an object were doubled while at the same time the mass of the object was halved,then the acceleration of the object - i g8o: w9vb0ihitfn1 uvz9m2is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to9y7 9/czyue yy a speed of 20 m/s in 10s. The magnitude of the net force accelerating the c 9cy9yyyu 7z/ear is:

  99.05: A tractor-trailer truck is traveling down 5ri, 8+;fibb zcwcfi4the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer appliei bcb 8w4fz5i ci;,rf+s on the tractor is

  99.16: Which of the following principles best explains why largie+3ise3v ;ude tractor-trailer trucks ee3is ui;+v3 dgenerally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilogz:a rk6z)aenp zi( p4/ram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent m izpr4aa ez(6):z/pnkotion?

  00.13: An object near the surface of the earth with a weight of 100 newto 0(h8c:jbn lnfinb 3/xns is accn n: 0 bf/bcx(lhijn83elerated 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 cu4 vfj57ol hu/w g9lb ki8j8j.onstant force of 2400 N. What is the 7lgbfjk i .4h8w/volj9ju5u8 speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides ac7d4om.e.* ,oib zw o)qvtrob* ross a rough horizontal floor before coming to rest. The frictional force acting on the block t*qo.*oevrboz7iob w)d.,4m is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity: *e))vh nws)foey: mt 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest.eneh tf)o *:ymw)s:) v The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a pe9yu:6**z +nz;gne 5dsuchu harson pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box and th n*u*5su nzyd: a ze;chu96gh+e 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 to rest on e q:v07ig igxs: rqd,p:*+ygfa horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices be yg0fpx::ivs*g+ qqe,r7id :gst 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 itykd7 fjy 9l)hb4 e,vrp 2)q;vis brakes locked. It then hits dry pavement and skids to a stop )l)b y y h7 v4jfiq2k,er9vpd;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 bn+6lj-moj.r jrakes locked. It then hits dry pavement and skids to a stop in a distanced. The jon6m+rljj. - 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 pxc ak5tx a3k,l55 n/nmakes 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 been traveling twice as fast? t3xan c5 5kp,lxka/5n

  99.39: The driver of an automobile must carefully conty/m p1 d. nr)4-hmdhbfrol each of the following devices. Which of these devices can cause an acceleration in a f /h1bmn.md-r d4)h pymoving 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 is 24000 newtons e*4;qkdk5m7n j8fvy ajt (*6yqj vu:h. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the *ju8kvn:yqyq f*jmdahvt;( 7 5k4e6jsurface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A perh7 x9msko ;)gyson called Ted exerts a force T9ygs 7)h mko;x 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 these three forces exerted on the box.

  02.27: The diagram below shows three roller z;jgpq4 )a*ffcoaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elepz*afqjf4g );vation 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 odsuoxufop 1yj- 4e+9p:g;4b tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevat4o9-pu4 1oe+ u:xf ;s opgjydbion 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 c ak8w-5/v rcz)phtt+furved track from point A to point C under the v)tw - /rhapct fz8k5+influence of gravity. 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 rope which mt4 kjqz3n 5ug/akes 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 move the k/54 zt3ugnjq crate at a constant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest isey)jcvw 78p,wpc9i 5oqsw;;6t- xhkr pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coeff-tp 6)7 ji wokqv 8;xc chyr;5pwe9sw,icient 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 a horizontal patch ofb1cfh64e6rdr9)7mzoj+ntyr vj . ;cb grass 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 re d7y jv6c;bjh.no +6fb4mr)cz1t r9force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crat.+hhm +mqy3udcx 91 k( 9egazrq1+jmoe on a table. Neither is moving. Which of the following statemem99muhca h +qdx(k.+gqezm1r3 j+ oy1nts concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleig - u uyg-5n2alxubi/pykm 0 o5+b4dxr9h as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to + x9kail4bx um5u5y0r g-b2u/p yd -nothe sleigh. What force is responsible for the crate’s increase in speedup the hill?