99.36: What happens to the inertia of an object when its velocity is doubled? :w5pgsr ied*;

  02.14: An intrinsic proper z8.:pf.pso zw udyfignz,9.- ty of matter is one that does not depend on the quantity of matter presz- ipfzd..n.9yzu pwgf :8os,ent. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume f6g0jgx mp6b/ np0 j1lns.: -wc ekb+wthe Earth has mass m+ kn00jwb:s6 cx.w/1lgpjen fg -b6p $5.98 \times 10^{24} \; kg$ 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 sur,am 5zfoub5yc3 ni2cva a4-x5face of the Earth. What is the magnitude of the gravitational force acting on the eamy-cf 5u5,b5 4 v n3oaaaxciz2rth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to increase while its r5-x4pnn no4guj; w2maccelerationo4g -xn jpn;5wr4m 2un decreases?

  00.11: A certain particle undergoes erratic motion. At every point in its m94c:a y(egcb jotion, the direction of the particle’s(ejy :cbgc4a 9 momentum is ALWAYS

  17.14: A block is suspended in the air at the end(26 t*f;v l ivrx-dh,0bb mbbs of a string held by a person. The person pulls on th vbb(i,hft- r;2*bsl db mv06xe 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 folloy *k+)mqk2vjbwing situations is the net force constantly zero on the objectmj bq2*+)kykv?

  13.28: An object is in free fall close to the ground. A pers y5/;fa hi8nm5oem q2hon intervenes and slows the object uniformly to rest. Which one of the following stateh8oy 5f e5 2mh;q/minaments 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 50 N, a(v(9v(yjg/(wp rh xwq nd F3 of 70 N, activwq(hw 9 xrj(gvy/(( png 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 combine to fnsbu*qhg ysno(3u+x o2gk ()1yc6h8n orm a resultant with a magnitude of which of the follow+cs)qynu1 hkoh 6ox(nnuys3 (gg2b8 *ing

  10.06: Which of the following statements is most closely assocrhm0( c6pzf w6iated with Newton’s Third Lac r6w0f( zm6hpw of Motion?

  95.06: The reaction force does not cancel the actimt lu2+ow41 * (xhudwyon force because:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratin2v (-ykwt)ddvp8 e fj3g upward. Which yf( t)vwv832jdkd -peone 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 the air with constant speed.41uasw /77oe row,n ug Which one of the followino7uuw7e anw1r/s4 ,g og 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 thr9ew qu8bcvanco-64j 9 own by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of tujc9eo9 q6caw 8bn v4-he force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book nfqa/ u8rq3xx6uj5,k is a calculator, also at rest. Which one of the following choices is anu,/8ruj3q f6x5 qxk the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Phy1om 1t enqwu v9r5a;2dsics I class were in lab conducting an experiment related to Newton's Second Law. The collected data were displayed u1 tar; 5oq2d 1w9vmenon 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 the saz gakmomqs/) 2lf nsc749 ) fgs,nq.l)me time the mass of the objecqf.) )na /l)sosc n,k72sgg9mm z lq4ft was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from re, bv ao o+ay;5b)jwgl:st to a speed of 20 m/ a wlybb)j +5;o:,oagvs in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is travel ou3yxc;)o-r npby j+ f:nkzdz15 4o1xing down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force tzubo5-ordoz +nnj fc;14y k:) 31pyxxhat the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-t6 ;oo*9upod nprailer trucksp ;d* upo9on6o generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throk)7 2gu ( jiyyvy6uea8a6 b+ikws a 2 kilogram ball, giving the ball a velocity of 10.(igyjk6i7ua )e6 yv+au 8ky2 b0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtonss foyb0hhmmyv l)4n-i5p6 +n3 is acceler0mhns vno y-y+ 34)b5 pilf6hmated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is +gz*nn 5/ lqiy2ywo fu- 7+)s:rlcej taccelerated from rest by a constant force of 2400 N. What is the spe yusycw:rfjt/i+-7+5el l g2q on*n)zed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough hkk7kw0oyl67g wb eb/ ,orizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How fark/k l o,6 e7k0wgyw7bb does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m acrosk); rc/j7bew9;/tqh y* uatvks a rough horizontal floor before yctu;vka */) ; 7rq9 j/tkwbhecoming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person push8v .cih ik;lh7gbe,d, es directly to the right on the box with a force of 60N. The coefficient of kinetic friction betwee;c,,hebikhild 7 v8 g.n 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 to;c2cfm)cjee4o/elq4t(y4 ) kdgw 9wh rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic friction between thw ycecl ch 4e 9(4)wqe4jk /o);tmdgf2e surface and the block?

  00.21: A car of mass m slides across a 6ei ol:/d 30p3b.kavmk:cp lw 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 3kalbd.cm0vop:i3w:/l6 pk e .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m.exfcl/dntc) p7hr 8h( y ,ps7 slides across 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 t xsr 8d7)yh/7tl (hepn .cpfc,ires 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 sl.e;8cepf fof0r,thl f9f5e or -hhm*)amming on the car's brakes and skidding to a st r)oe; -l.ee 9f o,m*8ffhhhpfr f50tcop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must j)v sr)r c/nm2nusc k)8(gpm8fv ,6t ecarefully control each of the following devices. Which of these devices can cause an acceleration in a msc88f2cn(nm )k6erv j rutpsg,/)v)moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a we)0*k.m eow+awu42*koom ba0xi v p-moight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36.k-aoox+*wmibp eao muw* vm0)k42o0 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person called Ted 7 f)xhfnefh:) 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 exerted ofhx7) :effhn )n the box.

  02.27: The diagram below shows three roller coaster tracks of eqq6qql z f 2b9i,3fbbvm.i-2g sual length. Assume that on all tracks 9q s- biigq63 lz.mfb2vb qf2,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 cgzbvh) i0 4 1zqsl8k*yi6xa3l oaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevatiq 1yil8 4shzk0av3*zgbl6ix)on 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 frictionleshh0g ypcf2k95sly along the curved track from point A to point C under the influence of0h p yc9h5gk2f 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 flo oqhwznk(5k o 4pz3n*bq-p;;mor 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 ro(pqhmwn4 pzz-qo;*3k ob k5n; pe 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 100 N fvnt.e, .x2 putnr/1rwo g1 d+3*rgrgforce as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the fricxo*rgrpdvfw gn tn gur1.e.2+ 1, 3rt/tion acting on the block after a time of 1 second?

  05.10: A homeowner p+/sogrqkqo. r-z n+4cushes a lawn mower across 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 various forces on the lawn mower. Which of the following relations among the vsqr4.- + o+/g cnrkozqarious force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is mo7k66 1h6 moz rjgiw/(qmc)z yqving. Which of the following statm)z(hj/yrom6i7cq6 gw61 zqkements concerning this situation is CORRECT?

  06.15: A crate of toys remai,ety+ mczgmbdp05n;) ns at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. p n 0tc)5me mz,+yg;bdThe crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?