99.36: What happens to ta4w*rik r4mvde y2 37the inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on tci-,tgj+0 mhw*kvi;b kv3:n p he quantityv:c i kk+w0t;v p3hj-i*bn gm, of matter present. Which of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the su,xzyh8lgya (0rface of the Earth. Assume the Earth has mahy(g a 0yzxl,8ss $5.98 \times 10^{24} \; kg$ 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 n(uzjl,z l+7 n+ v*exmsurface of the Earth. What is the magnitude of th zlv7n z*lunx+j,+me (e 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 to increase while (nzk/.z 0nw1vai 1mds its acceleration ( .k 0anwz md1/z1insvdecreases?

  00.11: A certain particle undergoes erratic motion. At every point in its motixt.c 5,9 xlbpu)sla 2kon,l5,k x9sc b2ua. pxl)t the direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string held by a perso)bt99ko0b9vrgl tkvv m mn-5q(1 b 9rdkn qw25n. 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 gmo tr25 vmknkr0q wb(q9 vnl5kb99t-v9db 1)identifies the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the follrkc:t9ml6zwguc*(vu )c. x2mxh zj 7:owing situations is the net force constantly zero on the obje2 xu9cz.c(gurx6:k:t h7vcm)l *zwmj ct?

  13.28: An object is in free falxjoq 1-n t0:oil close to the ground. A person intervenes and slows the objt1 xq:-0i nojoect 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’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has t +qp3jxb,dxd/k -fok+ hree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 dkpx/3+d fo+jx-bqk, and F2 is

  01.07: A force of 6 Newtons and a force of 10 newto2y(kknate)c+fejf/lc; g 6 8ons can be combine to form a resultant with a magnitude of which of the followitc2 laf ;)fo( 6/cey njkk8g+eng

  10.06: Which of the following statements istvgunsrn 1 /9s;(i4v b most closely associated with Newton’s Thir9g n4ss/t;1b( nvv iurd Law of Motion?

  95.06: The reaction force does ks- n8yyy f7h-not cancel the action force because:

  14.14: A box rests on s, -sqvw,k1 hothe floor of an elevator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitationao, -wk ,v1hssql force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constan0ybz9 7we(+hqtbdd)e r8 e tdaf-ni1*t speed. Which one of the)+-wq hz8e9t(arnie0d7dd 1eyb* t fb following 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 pin5dx6olji ( -e8dd p.ttcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exerts on the5d. loxdt8ej6 (n d-ip bat is always

  11.13: A physics book sits at rest on a table. On top of the book is aix 5j8 lt zovk*ou3cr; *.a:tt calculator, also at rest. Which one of v3klxrizut; o 8 .*ct:5jaot* 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 lab conducting an experz,vm g2m1; y tqvii,7ziment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this graph, what co ,q; yv7vitz m1gmzi,2nclusions can the students make?

  99.03: If the net force on an object were doubled whilajek 0+1 exr yz5 oken,;n1t6ne at the same time the mass of thy;5n+kkz0er, 1jnn6e o tx1aee object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from re5 j i54mjd6pud7fj 37berv;h zst to a speed of 20 m/fem;dpv ur3 b6zjj74i5d7jh5s in 10s. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The manc9i i*v0 :*ollhaob2 a j8in)ss of the trailer is 4 times the mass of the t2v9h *ol ibi*8n a0jn lio):caractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains w;hki r k) bact3pto2((:qrp8ihy large tractor-trailer trucks (bqkh;t (trp)p kc38io:a r2 igenerally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest n ho1f2e*eb+t q6f-ibyr-xe8w2 v /yqon a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. w b6yh8bt/rvnqo e-1 * yfife2e+x- q2Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtonsgkga0)dv)8 t:w* xljp is accelerated at j)dpt )8*a:gg kxvwl0$4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200rmisu*cia+1ws :+h b /z,uvm0 kg is accelerated from rest by a constant force of 2400 N. What is the sm+um:+css0 /uiv *zrha , b1wipeed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides 9 u 0laq2geq/ f0,o tqum+yov3across a rough horizontal floor before coming to rest. The frictional f/ufge, voa009+m2qq q3y uoltorce acting on the 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 m acro+.b.ao8 7bm kaujd 1hoss a rough horizontal floor before coming to +ao bu8m..7j1doakb hrest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal sur, g6g-gix wv8b qq8(wbface while a person pushes directly to the right w6xvbi8qqg g,bw8-g ( 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 to rest ont )4qft(yik 5n 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 i4)yktt5f qn(friction between the surface and the block?

  00.21: A car of mass m slids2 e26on,k/hrf pm+n)oeau;ues 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 tires and the dry road i+o e/;nuu2emsr6pkn af) 2,hos 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 m m+gs4/;/h7qtl7w kzc3q tox 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 wq 7ostz/7 lgc k+4 ;xmt/m3qhis 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 slta5q y*-(i ecyamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been t 5aiq-ec*(tyy raveling twice as fast?

  99.39: The driver of an automobile must car fv t tezu*k*/:b-r, mdcyzd9e2d;7wrefully control each of the following devices. Which of these devices can c*d2w:e/kdu mtr - 97;ezfr*bt,zvcd yause 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 wiuley j (06pcr(th a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the roc(pl 0ec j(6uryket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the rightf1sf5os z8d.x 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 thz 1ossfd8xf5.e 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 len to +1mw4 zof3vfql.y.gth. Assume that on all tracks the roller coaster carts start from rest at the same elf.m14wfl+ z v3ty. ooqevation 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.q,4z/lphjc .7sea m g shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and,p/ ezc q.j4la.gsm7h 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 frictionlessly along the jvwv-/jq-p6 s curved track from point A to point C under the influence oj vwvj-6s- qp/f 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 floor b 7pu)qp+ aumpxh9a8,q hdo3- qy a rope which makes an angle of 300 with the horizontal. Whic - dq hqp)opp 8,ah+7aux39qumh 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 initially at rest is pushed against a 30 jx2az8. mhgwmp6v xwall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.3a zgvxx8326jp w.h0mm0 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 law kay+.1wkou)z n 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 necesswy )uko+1.z kaarily 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 movie( u r5f*vm3(vu(y nyqng. Which of the following statements concerning this situation iu 53 *q(yfmvue(vyrn(s CORRECT?

  06.15: A crate of toys remains at rest on a ss)bnqj((ma*yq s p6m)leigh as the sleigh is pulled up a hill with an increasing ss qa)m psnyq(j6m) b(*peed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?