99.36: What happens to the ih8f(wt6ui0bc nertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend -i*d+(s3ssqu fbe ex7on the quantity of matter present. Whic*seud(si fq37-+s be xh of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder9ig3 niepyefvfu-x1zd98 8e2pt+ 77vf9kmir rests on the surface of the Earth. Assume the Earth has mn-fiikp7y+ me7er3dfef gt9 91 xuv i8p2 9z8vass $5.98 \times 10^{24} \; kg$ 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 fal06 qms ij3ghw+2xyiky)7l1xo,p tz2x5p l5cnl near the surface of the Earth. What is the magnitude of the gravitational force acting n56yl j0 giw1t5i7 lx +m 2x)y, pkzshxpqc32oon the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to inc+p9 0aesn0jsyrease while its acceleration a+snj se90yp0 decreases?

  00.11: A certain particle underfuet e.u9b6ng :g-m. rgoes erratic motion. At every point in its motion, fgemue. -9.6gntr:ub the direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at tda js q+;,p7q.-, rfnvj)vcu bhe end of a string 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 p,7.b )u,c ;- +dqfavsqvnjrjforce of the string on the block?

  07.18: In which one of the following situations is the net force8bk8y 6suj+ qh constantly zero j8u6hs kb+yq8on the object?

  13.28: An object is in free fall close ,d sojsm4/o.m to the ground. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of thod/m,oj4 s sm.e 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,y a7+:fv(pspe and F3 of 70 N, acting on it. 7f(+pv py:saeThe magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a f+ s0a+1 8d g m wfk/()u2i xxvlctp4l)7frrnqvorce of 10 newtons can be combine to form a resultant with a magnitudeilfd)m2r/ kt 7+ (x4flwgv0vax) +s1cpn8 uqr of which of the following

  10.06: Which of the following stae;9ht t(ica -ctements is most closely associated with Newton’s Third Law of c(-h a9ti;tecMotion?

  95.06: The reaction force does not cance13na8 /k e sljn. ratm.guix77l the action force because:

  14.14: A box rests on the floor of mn2i:6ibph :0 mbi gg.an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitatb6.iib0 i h:gmpn2m: gional force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant speed. Whichz yw,f6r,l8u) u2nh q2kbn4ir one of the following choices correctly describes the Neb,n)fh4knq 2u,rr6z i 8uy2lwwton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcherhk *ebsypi f2v-2v6a9 with a speed of 35 m/s. The batterswings an*hav-6 k psebif29y2vd hits the ball. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a tabuhig- 3i 44av-sf8ikg, hifs.le. On top of the book is a calculator, ali agki-iis fsv-h.hg8 f4u4,3so at rest. Which one of the following choices is the 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 la90gr.6f) o6y+v k91zbr kbvvy;j dby( eqqd.kb 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 stuyj;dd.v yf99vk)rk 0b6.qo b 1+zy k(gqeb6vrdents make?

  99.03: If the net force on an obj2y cad8;vwu)p ect were doubled while at the same time the mass of the object was halved,then the acceleration ofv;pu)dcw2 y 8a the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest tot o0vu n8 +bb*0v1 2nmionc(+umf 4roz a speed of 20 m/s fm vm( bztrun1+viubn*oo 2n80+co 04 in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The m2c 1jhznw7 fo0ass of the trailer is 4 times the mass of the oc0j1w 2nzfh 7tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains why large tractor-tr:fiime.d2 b2 pl v-c:lailerl .-cli bdfevm i2p2:: trucks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictibyel g:im.aew*r/89o onless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the su8g:iw9*r/ea ob mle .ybsequent motion?

  00.13: An object near the surface of the eslje3y3p6p3x )-lc m qarth with a weight of 100 newtons is alc) emp 3ls-y3jq36pxccelerated 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.0o4a;kds ooi of 2400 N. What is the speed of the ao od;ski 40.ocar 8.0 s after beginning?

  98.32: A 3.0-kg block witvs 26gntj x;bha n;*-t*k7wav h initial speed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block asng7v2t axbv *t; ;nk*6-jwhis 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 m acg/)t. * flzvb*;w w03ckuexn4sl4i qfross a rough horizontal floor before coming tf/k;4fx4b)ei vcw* 0t*n.s3gzlu qlwo rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rq5a;-q f hb/tnest on a horizontal surface while a person pushes d5/af;qq-n bt hirectly 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 at 8 m/s accelerates uniformly m. /vc xylwn,o942l8ia;gti sto 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 coeff agmoiy t2l,nw8x ;.l9v4 /icsicient of kinetic friction between the surface and the block?

  00.21: A car of mass m slidessc/j 1pzlzz ok/q7*z6 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 kinetz /c7k6q /lz1ozs pj*zic 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 it rzvf sb+z5c76qayz:10 y/cn03p burss 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 rozz0 qp5n7r:sc+rv61y3yub ac z fb/s0ad 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 em dxvbxpf4ph /y1j -23pergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidde pxb yf4132pjp/ vdx-hd if it had been traveling twice as fast?

  99.39: The driver of q 5k cp/z(2ejyan automobile must carefully control each of the following devices. Which of these devices can cause azcp 2e5j/ky(q n acceleration in a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force uq)ifx s 2p/ p q2(d0-f3p(de vu*taquon a rocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 s xup2-2 vq i0aqpd t(3f*q /)(pdfueum/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor.mgqw4 e;0 w/xp A person called Ted exerts a force T to the right on the box; qm/ exwpw0g4. 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 coaster tracks of equal length. Ass z (-o )eaiw77zz5voyd+k igo-ume that on all tracks the roller coaster carts start from rest at the same elevation and move ae- 7gzo(kvzdow5i+i oy7) z-s 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,t*3.m fe 47c+lrfra ku )gcbe roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frict+e re)c4a.f* utk, f 7rlgmc3bionlessly 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 fric)x,y3n 0heqr*ioskd. +/g dpjtionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart's acceleratios ir+qd3eyo.g0jkd ),h* n /xpn at point

  02.40: A box with a mass of 50 kg is dragged acc19ftgf mnsqnp-n3 1- ross 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 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 n gf-n t3p nmq1f9s1-cin the diagram?

  04.40: A 6.0 kg block initially at rest is pushed agabll/c k0,l ,z8k0vba winst a wall by a 100 N force as shown. Thecoefficient of kinetic frictiol0bc0k8b v,lzkw/ la, n is 0.30 while 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 au(q,y;dkilod ,q fadc:y +v5d,3l7 ktcross 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 various force magnitudes, W u: d,, iqvc7l yd3f dk;ald+tq(oyk5,, f, N, P is CORRECT?

  06.14: A book leans against a crateo 11/h+fo1a+ isopt uy7zuqk5 on a table. Neither is moving. Which of the following statements conc1f5oop1/yasqu +hi+ 17z o ukterning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulled up a gl8 0j ify kz4xt gtht075cg00hill with an increasing speed. The crate is not fastened down to the slf78 zgk045lt itht gxcjy00g0eigh. What force is responsible for the crate’s increase in speedup the hill?