99.36: What happens to the inertia of an object when its velocity is doubledz;)6tit ibnz8?

  02.14: An intrinsic property of matter x )wg(myi( ww/wde -+cis one that does not depend on the quantity of matter (wd-m )/ wygcex+iww(present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surfbs0wf nn bw.ed00 67oxjzn+5y5sh tx1ace of the Earth. Assume the Earth has masxwt10 esx0nnh50obn zjd. 6yfs5wb7+ s $5.98 \times 10^{24} \; kg$ 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 Earthme - m ;-98uikxebea7v. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earth mass mx;-a-ev e7u9b em ik8is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocm3oa*nyfx1hfi q9 -wu xswumu 3k5;;0v8vbt )ity to increase while its acceleration decreahq)0v9vff o; ;uu* twk miwb33mus158x xy-nases?

  00.11: A certain particlc-dnx e*sgc 17e undergoes erratic motion. At every point in its motion, the direction of the particle’s momg*-1d cen7x csentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a perp *aqaw6 r+rj+son. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choice war 6ar*q+pj+s 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 nem ;1jqr -)twzyotc:p.t force constantly zero on the o. pqc;1rotmz tw-jy:)bject?

  13.28: An object is in free fall close to the grl5v5tt66xwp 2/ rurm/ qk8knhound. A person intervenes and slows the object uniformly tqrw 62k/ht 5m6v/nur5k xl 8tpo 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 acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N, F2 of ,yyx. wgl11tm 50 N, and F3 of 70 N, acting on it ytl,y x1.1wmg. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can cqpu: p0d9a8 vbe combine to form a resultant with a magnitude of which of the folld 0:pq avpcu98owing

  10.06: Which of the following statements is most closely associatedrk(0(f eh;5bi efnardtoz72*t yr3 z 9 with Newton’s Third Lro*z( et d0fa 7rtny9;hb r5(z k3f2eiaw of Motion?

  95.06: The reaction force does gght1o 6s1w y8not cancel the action force because:

  14.14: A box rests on the floor of an elevator.thq0ry gl;rh,p f 6vavu:153d The elevator is accelerating upward. Wh:d3 ru0fprha1 vq;lvg6 thy,5ich 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 do . ow8s e9rh 6bso-e:nkaw2/khwnward through the air with constant speed. Which one of the followin-8h kr e.n 9oakeoh/2bw:s6ws g choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitchm /cktc,nf)rrc8h47 c er with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of thecfc) ,rr 8n tm/ch74ck force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On t;1np+*ng r4qa,s txal, re2gwop of the book is a calculator, also at rest. Which one of the following choices is the Newton’sr2t*qg al1gsnera,xnp,+w; 4 Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were 1um o0wek+wqgx*dq wx.+54giin lab conducting an experiment related to Newton's Second Law. The u+iw+4 q .w5 wekggxmoq*1d0xcollected 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 w ,4xif o.k: x9gs;sdtnere doubled while at the same time the mass of the object was halv 49 i,nd.s xsxk:otg;fed,then the acceleration of the object is

  96.15: A car whose mass is 1500 h .ndso/0eo-jkg is accelerated uniformly from rest to a speed.d -/n0osjeh o of 20 m/s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer trucv6nx 8w5+iq:0kuhid j2(q hdp k is traveling down the road. The mass of the trailpudv 8xj2n : (qhi65ikdh+w0qer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles bestlccvxy86dg v6k+ +t o. explains why large tractor-trailer trucks generally accelerate much more slowc vg.t66l+ cxd8k +yvoly that automobiles?

  99.19: A 50 kilogramajy/ 9 /mxug9 ndf7xldre6h,9 skater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which stat hy/f9jel da,dn rx6g9x9u7/ mement describes the subsequent motion?

  00.13: An object near+o al73ynwpzrue (pif7i01:q the surface of the earth with a weight of 100 newtons is acceleoy ul7pep 1iqf7azwn:+r30 ( irated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelmzzhj 0 (gm4o5f9 fk+gerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginning5zmgo49f (f z hmkj0g+?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rowxt 7 w4dgbk j4ipw 8cg)lx38, pm97dzugh horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does8zdix3c7 44l t9bxjdkww g,)p8wm7pg the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m acrnf uixf4jb:.-kgb5s :nejg8 5oss a rough horizontal floor before coming ton4jgsf inb:8.:ub5-k ej5xfg rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal s7uu tlim9 : oat11*roxurface while a person pusheu*uri 7o t: am1l91txos directly to the right on 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 ;m6eaqw:t *fyat 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following c:yfem6 ta;wq* hoices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m sliiw m k -(pk*cmdee66w7des across a patch of ice at a speed v with its brakes locked.k wc*m76w pe(em6ki-d 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 mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides acros+ cda,evc2o xa)fw)z( zl-q3ns 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 coefficiennawlc2 oe v)3a)zfz, c(x-dq+t 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 car's cdk -a*y;qgx +tk4l3t brakes and skidding to a stop. How far would the car have skidded if it had been travelin4 3-k+ dt;qygkx cta*lg twice as fast?

  99.39: The driver of an automobil zl+jgzbsoyj1h roe- . 059n2qe must carefully control each of the following devices. Which of these devices caj eozzrjn+1-y9ol b. 25gh0 sqn cause an acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on 1q1a a8nie liw z7,f-x5awgb/r iq4r. a rocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the r1gr,-ifb x5wir4w/8 7e1a qi qaln .zaocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the rig6,. 2b rzlhdb sf g(:, ef3xq9gzbjh.dht 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 accelerates to the right, rank the sizes of these three forces exerl rj,dx(g6qzed f,2.fs:bh3 g zbh.9bted on the box.

  02.27: The diagram below0o(ctj il-ui: f( i5rs shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster c istfriou c05l:j(-i (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 be traveling the fastest at the finish?

  02.28: The diagram below shows three rollem.g. 9y juvsu6r coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frsm9vuj. uy6g.ictionlessly 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 c/7t6nex j ,gwjartrolls 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 acceleration at poex w/7jt,jn 6gint

  02.40: A box with a mass of 50 kg -wym, n9av9+ 4wd( gln 7opg -qi(hthiis dragged across the floor by a rope which makes an angle of 300 with the horizontal. ylgt ni- nw vqg,dmp7((+9oiwah- h49Which 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 indo ;fh5pld1t.3e83e ri, samrq1wva0itially 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 is 0.50. What is vao a t01 m3;rw,erdd8q.efs13ph 5iltrue of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower acr8z2es 33 *xacnbw(.ymj-p,-c whxlk doss a horizontal patch of 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 vari-zwjack,n(d8 3mx ph-w3s cel.2 *ybxous 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 0ve 6am /5, swu(pkwlhagainst a crate on a table. Neither is moving. Which of the following statements concernings( pwwu0av5lm,/ he6k this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh iljdoxwrf+gb 1lq1)w qqx;a7c(, - e:h s 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 spe1 fb-xjxdc7w,agh oqrel: lqw) 1;(q+ edup the hill?