99.36: What happens to the inertia of an olznw3r* l)8-jr 1bcj(. zda aybject when its velocity is doubled?

  02.14: An intrinsic propp5;gre3pz rq(dfxu2 6erty of matter is one that does not depend on the quantity of matter present. Whicrq2 exf3pduz ;65gpr( h of the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the e ,chfg , mv*ui3. ly+/kcinw0Earth has mass kg,wii+/fcc*ev0,3h y. mnul $5.98 \times 10^{24} \; kg$ 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 sphei5comfep;0pq f/a4ko/c ,p *d re is in free fall near the surface of the Earth. What is theep 4c0if/dp mok;f p,q5oa/* c 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 vel u jhxigrq(ik(8+sx:g 9 +ya(nocity to increase while its acceleration decrerqk:x +ngy+gus (( 9(ixj ih8aases?

  00.11: A certain particle undergoes errati k p 4bg bc8l(ia:,/m6m7zofgzc motion. At every point in its motion, the direc o6:4bblzi8f /gm7(cazg pk,m tion of the particle’s momentum is ALWAYS

  17.14: A block is suspended,,j/(ue ca ,tbym+ f8eslec*fdf 1j x2 in the air at the 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 force of the stringm/,subf(2*a,ldfye ec ,x+1 ej cj8tf on the block?

  07.18: In which one of the following situations is the net force constantly zw.n q+b hkgfu h*b/-0vero on the objfqghv wu+knbh/b*-.0ect?

  13.28: An object is in r3mfqqq-k n;s5)8ddyfree fall 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 mq ys-dqrq3k5f) d8 n;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, f( am ib 1*+ya+k2c paxgy*/zwF2 of 50 N, and F3 of 70 N, acting on it. The mag p2*c(* a yx+ka/i mzy1+agwbfnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 r;( 6:ldfwm2qjf5p +/uespmc newtons can be combine to form a resultant with ajpm5 /+:fmrd cel2p qwf;6us( magnitude of which of the following

  10.06: Which of the following statements is most closefo;pv xi2rx 9-ly associated with Newton’s Third9x2roix -f ;pv Law of Motion?

  95.06: The reaction force doesty 4a7duf*da 1 not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is a dju:.:sie/w-z(5mg n)vx rohccelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the E/mhrou(w d-nje5)zv si :xg:.arth?

  15.15: A skydiver falls downward through the air with constant speed. Whit8b n,gm at5pzd;) . 0adgljk9*rlcv7 ch one of the following choices correctly describes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall cdvl8ab,.ad*7lj);pg0 m k5g tz nrt9?

  06.08: A baseball is thrown by a pitcher with a speed of psyi.)i e, 9bq35 m/s. The batterswings and)eq9b i,psi y. 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 od /1 hz((5,pj gasznyjn a table. On top of the book is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force thaty5js((,z a/1zd p jghn the table exerts on the book?

  05.06: The students in a Physics I class were in(ed z94s* o:xeeilgz5 gn7c5md jxa: / lab 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 students make?:lmineedgx 4xg *e/sa59zo5d( 7 zj c:

  99.03: If the net force on an object were doubled while y5b woi(dy6* l;cj. zcat the same time the mass of ti6low.;zd y(cycb*j 5 he object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg isfa -hca nnis/bx: 624x accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of theasb/nhncx-x a 6fi:24 net force accelerating the car is:

  99.05: A tractor-trailer tru p hl97rsy7-ttn 5qxu3ck is traveling down the road. The mass of the traile3lu7 q txh-5str97nypr is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best)tqkr q864ulw explains why large tractor-trailer truc8)qq4r6uktl w ks generally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a +(;vbee(+zxvg jvf*i frictionless rink throws a 2 kilogram be +gvv((exb* + vji;fzall, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of 100 newtons i0e (nh+dly )xms accelerated l+y(0m nx )dehat $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 :j;+:zo-4oozlv- e9w0 km ohqq+lkfhkg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginni 49h :0ok:o -mq loqwozfk+jv+ ;zlh-eng?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizonirnb r 9wh(jdp cdwe+;12p1n8tal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slidejrb 9 rcdwhw(+;1pd8e in2 p1n before coming to rest?

  95.38: A block with initial velocity 4j0v.a 86 blsed.0 m/s slides 8.0 m across a rough horizontal floor befobej.6 dsla v08re coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a h wbj6lt c/dx*,orizontal surface while a person pushes directly to the right on tb6 l */,twjdxche 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 uniforml+*k4 hka,co vvy 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 akh*okc+vv4, of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a speed v with iv gri 8yx9acbjb b:)wu9l.8i*ts 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 rb.9g88uirb 9j ibx)ca*y v:lwoad 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;c0el6, ygtfj wluj1m(x:5yv8e -wo w ice at a speed v with its brakes locked. It :cle1 -mgw0x,6ujvto yj5 w8( wf yl;ethen 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 .

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 bythn5 hc i j3j)i94c7rx slamming on the car's brakes and skidding to a stop. How far would the car have skidded if ithth5xji37i4jrc9 )c n had been traveling twice as fast?

  99.39: The driver of an automobile i g f,6dj) ro3n9a--hm oyiye:must carefully control each of the following devices. Which of these devices canyd- m:r)y6hj3 -,ien oio9fag 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 weightd/sr 0/2xczb* ikrn+40yvwam of 15000 newtons is 24000 newtons. About how much time is needecmb 0 /ay0xdi4snwrr 2vkz/* +d 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 thc:2pchjxvk5*aut:s)0lds t : i) v+ vje right across a horizontal floor. A person called Ted exerts *k u+ : 5:t) csv 2pli)t0hxac:jdjvvsa 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 on the box.

  02.27: The diagram below shows three roller coaster tracks of equalq 8wmw;7x bt80nvq r:b length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to th0rv ;b7 wn qqm:8tw8xbe 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 equal length. Atu/0 boep w0vz**eq8xssume that on all tracks the roller coaso8 e*w xu0t 0bvp*z/qeter 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 frictionlessly along thmu1q *m*11hht0;q twjxx 5qrye curved track from point A to point C under the influ 0h m*hry1qxm1uw1*qx 5;t tqjence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mak qp. 9;d;negyss of 50 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 coefficient of kinetic friction between the box and the floor if a 250 newton force on the rope is required 9;ypkq;g.d e nto 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 resto xnsbqlnn/r6 q7 b(.; is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction actingqb n6r on(/s7.;bnl qx on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass 5 jt-:er (mogzwith 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, frzmg-:(otej 5 , N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neitton(cth0cv z e ..6.lzher is moving. Which of the following statements concotz(ce6z. l0.hcv . nterning this situation is CORRECT?

  06.15: A crate of toys remm-ocrbz ixu2044j:s tains at rest on a sleigh as the sleigh is pulled up a hill with an inc z r s4u0j4b:2xmtio-creasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?