99.36: What happens to the inertia of an object when its b*rkug: sau,dmqw 268velocity is doubled?

  02.14: An intrinsic property of matter is one that diz9d+z : w/haj a1je3+yom1-(o nejrdoes not depend on the quantity of matter present. Which of the following prmdz or+z:jw-hjie 3an(9y/1d e o1a+joperties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on tzvdddp.4.y 4 whe surface of the Earth. Assume the Earth has mass z4dyp.4d .vdw $5.98 \times 10^{24} \; kg$ 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 of34xzgqpa hr*/n jmw++ 1grl/o the Earth. What is the w+qhoj/mgg+13/a rx lr*nzp 4 magnitude 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 object’s velocity toxurwi87) 2p yc increase while its acceleration d yuiw x)c7rp82ecreases?

  00.11: A certain particle undergoes erratic motion. At every point in it( cds +no lbiml5/6ldhnb+- :y3ya9xks motion, the direction of the particle’sa9(ny k /5+dbis+hllbd-mly 3n :o6xc momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a perstk0lm7c dsl(x +jda/ 7*b;cfton. 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 pad(la +/m ;lxcbdsft7c7k*j0 t ir force to the force of the string on the block?

  07.18: In which one of the following situations is the net force consw: xgyu+ d mo-;x1bw;tvn+gg 4tantly zero o wy w4mg;;dnovx+gxbg1u+t- :n the object?

  13.28: An object is in free fallzajq9 )wn366sdfn,(ijc j dj/ close 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 the object as it is being stopped by the person? The magnitude of the object’ ndfz w jaj6jncsi/)9 qd,j6(3s 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 ofbxnguvh nzej 6 lrck:os0.)il 218*)x 50 N, and F3 echvb8ln nol6g1sixxj ).rk:*z) 02 u of 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 newt; .cpl gfmb7iwx4.)y bet dbs p.62v2tons can be combine to form a resultant with gdi.pp.fstyc274m b.2xv)bel6; t wb a magnitude of which of the following

  10.06: Which of the following statements is most closely asso k6ai2d(kx9o uciated with Newton’s Third Law of Mo(9 ia6o2kukxd tion?

  95.06: The reaction force does not cancec twdd+8m1qtwbz y(; /l the action force because:

  14.14: A box rests on the floor of an elevatn-cvr() po*m gor. The elevator is accelerating upward. Which one of the following choices b*g)( rno-cpm vest 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 witlk)od.7g4gt ltiiwf7g ,8 1wnh constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair fwg,n4wd7gll 71of tgk.)t i8 iorce to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by iytf3-)di m 6ja pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the fd-iyjt )f3m i6orce 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 is6/47qp( wce5tpx*izm5 ef a)7 zdtu so a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to qa /tpw(xo4*f 7te55 pc)iszzd 7emu6the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab coafd)f3jv:/i/9dg ti2.f h xssnducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, whadfi)i/9hsxsd. f/t3a2jv :gf t conclusions can the students make?

  99.03: If the net force on an object were doubled while at dl (ty/pd d+fg.im8 as;c;ny/the same time the mass of the object was halved,then the acceleration of th ; i s+(gndd.df//y;t8macl pye object is

  96.15: A car whose mass is 1500 kg is acceleraths)t;w 24o,max/zkql ed uniformly from rest to a speed of 20 m/s inalwxq42m/koh s;z )t, 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is a+dz751 zw hknqxb,+tz b iw(:traveling down the road. The mass of the trailer is 4 times the tz,nz7bwqi+ ahwzx5d1:( + bkmass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the fz tjbi6ayyx) t,h9( r:ollowing principles best explains why large tractor-trailer trucks generally accelerate much more slowx,bj yt y(z6r :t9)hialy that automobiles?

  99.19: A 50 kilogram skater at rest o ynf,tzbg p8b p*oyps+p ej2..0nh8d0n a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Which statement describes the sub+s2,. npb0y dtb8zgp 08p*hf y.opnejsequent motion?

  00.13: An object near the surface of the earth wk, q os,;0*qq,e + r blk04.gledlwsexith a weight of 100 newtons is accelerated at,ebskxslwd + . ,qo4k e0;lgel,*qrq0 $4\;m/s^{2}$ . 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 ev uh2ju;20btv vm0*bpoe09r-4c qz zof 2400 N. What is the speed of the car vu 2-u2mh0pq9rvz *bjezvo;0 c4eb0t 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough * rm5rct*jn 89azdri6)ne6ov gwk-x , horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far dxza6e8 ,* -n*w9rrod )t6cijkgrn mv 5oes the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0(t+;yvza*i1z(o t mi/ibhd*hb ai -l6 m across a rough horizontal floor before coming to -ib*v ba/iyalhz1 tdm(6 ;i( otzhi+* rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizk kp up4;gz;(iuug1w:,pla y,ontal surface while a person pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between, ;;4gpuw a(ziy 1:uugkkpl,p 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 unifo/of *jv4rb4tr 2a e-kormly to 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 the surface and the2t o/-ajko4fer 4* bvr block?

  00.21: A car of mass m slides across a patch of ice at a speed v with its brak8, v31 ,veor idgjsoiuwz*w9*gf0:p qes locked. It then hits dr*qfprodvw ,,i89g ig3suj*e:z0 1wovy 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 across a patch of ice at a speed v with its brakesgzmr; o0h:a0d71zy g+i:eek1k 8c vjf locked. It then hits drk+k 0i1f: jze dc:r z17;8eyg0havomgy 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 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 braiiu3qb2 8 hb5 9:drpkrkes and u82 ri3h qkib:bd59rpskidding to a stop. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the fo2e kkpf bzxqba1n)5-:llowing devices. Which of these devices can cause an acceleration in a moving c2qe -ak kf: bzn5x1bp)ar?
(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 neg- 3cj)r5 deynwtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of -)g jcr 3e5ydnthe Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A/ai+ldr/l tfd21h-gs 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/ds/rfg-il lh2d1 a +t the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks of e2o wm i9t1a1uequal length. Assume that on all tracks the roller t91miw 21aueocoaster 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 shd;e v*me6.0hishjt)tw4u5 coows three roller coaster tracks of equal length. Assume that on all tracks the roller cov wi4 d*t0to;c .emuh6e)jh5saster 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 cartrolls frictn x-en,3 m/1mr1h z(w.f1vnhv8jfb ek ionlessly along the curved track from point A to point C under the influence of gravity. What would be the direction of the cart'nb 1 /1m.n(,f 3-8x wmzrj1vhknvfeehs acceleration at point

  02.40: A box with a mass of 503xu r +rtxbv64 kg is dragged across the floor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficieurx3 6 v+4xtbrnt 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 initially at resv; zz6q+akf p,t is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of k, af;pq6zv z+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 2oo x:ixhs+l (across a horizontal patch of grass with a constant speed by applying a force P. The arrows 2ox: lis o(h+xin 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, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Whicdvqkw l+8( -slh of the following statements concerning this situation is COR-(lldsv+ qk 8wRECT?

  06.15: A crate of toys remains at rest on th pk;mz0j4c -a sleigh as the sleigh is pulled up a hill with an increasing speed. The cratjzm4k p 0c;-hte is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?