99.36: What happens to the yg1 bp 48z/8hlc0*/o)pgokhrlttf1 pinertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter ird,biq /x80er u c+iu7s one that does not depend on the quantity of matter present. Which of the following propeuqr0 ,ucbiixr+ 8d/7erties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assum)r6r9.7a/rm 5gt xo4r uxh6curgts 0ee the Earth has m7 9o/ 06srrrume r)tt. x4h5ra6gxgcuass $5.98 \times 10^{24} \; kg$ 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 sjsd -(nx4 /t9h,0ru4o njhziof the Earth. What is the magnitude drsu(j 4z,ns0hhxi n j49 /ot-of the gravitational 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 pg/a v0,o8j6vi yoo- bobject’s velocity to increase while its accelerationpb6vo ,y0g/- vi jo8ao decreases?

  00.11: A certain particle undergoes erratic motion. At every point in jx ;it 5hss:qej,c-b* its motion, the direction of the particsq-x ,hj; 5b*et:ijscle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of agfv ).ii6z.a a string held by a person. The person pulls on the string ugfi ) aza6..viniformly 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 following situati 0 mhfuz.3(dqn2w0d znons is the net force constantly zero on the 32nf z00q(dhuwd nz .mobject?

  13.28: An object is in free fall close to the ground. A per0ki;v/gdnp 9k,t0 otu son 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 magn00ki, nukpv9;t gtod/ itude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium h:(zp .xy+n ik1dbyr+b as three forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on( 1rz ibkpy+n.bxyd: + it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newt d56+b.w5zb0 g/ym ) mnaizhuhauun.pvit,4+ ons and a force of 10 newtons can be combine to form a resultant with a magn0zh+g 5bp.ain+w z5/u.u)b6a 4mnym, dihvtu itude of which of the following

  10.06: Which of the following statements is 0 jdrks(lm3(cmost closely associated with Newton’s Third jds(03cmk (rlLaw of Motion?

  95.06: The reaction force dx u3 zcq/g4dw p,.ip5foes not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerati 0.ni/oe7tmq hng upward. Which one of the followingomqeh/t07 i.n 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 downwah 09mbc.ok nhp;s9d3 v+ 9pzemrd 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 skydiver during tov .dh 3mp0z9spe+hb 9nk9m;c he fall?

  06.08: A baseball isg; yb*zmw 3vf) thrown by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force thatv3)g* m yz;wbf the ball exerts on the bat is always

  11.13: A physics book sitsqqyw4m3ej 1a.o4*vs g at rest on a table. On top of the book is a calculator, also at rest. Which one of the following choices is tgq aqe jwyovsm4.413* he 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 conducting an expopu,;u8afe y6w -+cx c*c0n akeriment related to Newton's Second Law. The collected data were displayed on -npwf0;c*o6a8 c,ux keauyc+the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were dm x ..sk:mgme:oubled while at the same time the mass of the object wa.mm :.:ms gkexs halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from 83g oe3qv px,orest to a speed of 20 m/s in 10s. The magnitude of the net f,3p8x o eo3gvqorce accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the tra r.1 c;jp+uxusiler is 4 times the mass of the tractor. If the tractor accelesucru .1+xp;j rates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following princu vpuoeur7 ; b)l(lxbbs-d5))iples best explains why large tractor-trailer trucks generally accelerate much more slowly that automou;u (-x))p5bldeo bvubrs) 7lbiles?

  99.19: A 50 kilogram /c-xusog tljs/)1 *t(a6ic lcskater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Who(l/sj1)tts-c6l gxcia*/uc ich statement describes the subsequent motion?

  00.13: An object near the surfa *p6* ikq7udyph ksp1)-y4eryce of the earth with a weight of 100 newtons is accelerat6ir7s1e)d-p p y pyyk* *hku4qed at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose massa /1;vcyqc a+p0 o/lko is 1200 kg is accelerated from rest by a constant force of 24oya/ 1;qk v+p co/a0cl00 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides 0m j gck5f td-lwvu85(across a rough horizontal floor before coming to rest. The frictional force acting on thedvwt058 5fl(g c-ju km 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 kcly*/o 1lp(u m across a rough horizontal floor befor (ulkop1 /yl*ce coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontnp * n9civ6:6kwr)galal surface while a person pushes directly to the6:ilng cpw6na ) v*kr9 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 at 8 m/s accelerates un2)r.ztxiy 2ny9w tm 3aiformly to rest on a horizontal surface. a zw)t 22n 9.miytyrx3The 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 the surface and the block?

  00.21: A car of mass m slides across a patch o;qprjs*m -a0qhn /ro7f 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 ron- /jq 0qr ;ohpsrm*a7ad 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 ah+ z524a na(+7a r9iulymlyfty2 ;kxicross 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 tires a2y7y5;x9 z2 iyiklhl+artaau 4 +nmf(nd 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'snvf ,t/iv w6k. brakes and skidding to a stop. How far would the car have ski wkt iv,6nf.v/dded if it had been traveling twice as fast?

  99.39: The driver of an automobmxk obdg2p x(;jsm6j) fw70x ,ile must carefully control each of the following devices. Which of these devic bx02m;goxf6 ,s7 ()mxjdwjp kes can 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 a rocket with a weight of 15000 newtons3o3o(bo * 1gwj cxn4cv is 24000 newtons. Abo c(b*c4o1 3jxon3w gvout how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person callg;hf ;sg,:;x jlj,4xbswa wk6ed Ted exerts a force T to the right on the box. A person called Mario exerkf, w,jxb6; hg4l:a gx;;jw ssts 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 coaster tu9il .yon(qwqz 6r* /gracks of equal length. Assume that on all tracks the roller coaster carts start f ./i*z69(rugqy wnqlorom 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 tracks of equaa; 6;jpn zmcb0 kpkxx 1qc5./bl length. Assume b /x;5 nzm;cqb0xkj.a1 pcp6kthat 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 reach the finish first?

  02.29: Assume the rollercoaster car7sm 9 mzsbqf530:qq)gb u5na utrolls frictionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of th7bq saqqnsb5 u:39)fm5 g0z ume cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged acro/cyx8am x9qgm) u*vomj c v6)*ss the 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 floo)m 9q8 mcxgov *x6aymv *cu/j)r 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 a 100 Nxkesqh0ds4u+b+x -e,f 1kt9 v force as shown. Thecoefficient of kinetic friction is 0.30 whifh19u4bs +dvk +st -0xe xqek,le the coefficient 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 of gralw .qxc17tue wp-9e-rzfj* 0 hss with a constant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes oft w ue9ef*j.r-0q hp7 -z1cwlx the various 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 against a crate on a table.4 c5q zw*,7 cbs6jlhg8ikaw k6 Neither is moving. Which of the following statements concerning this situaaqk ws*k 85j7ibcwg6,4lc z h6tion is CORRECT?

  06.15: A crate of toys remains at b wh4wkcwd); 60io,bq rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What )bo46;hwdkw ,q0w bic force is responsible for the crate’s increase in speedup the hill?