99.36: What happens to the inertia of m;elmayij5tf/1s9 w omz0*8 man object when its velocity is doubled?

  02.14: An intrinsic propejfq v ;knt-h3+rty of matter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrkv-;f ht n3jq+insic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the (/zps /b.c.p )sdl-cknpy8cjx yd+ o*Earth has mass n cp+sxj. /-bpdsd pzcyko /)yl.8c(*$5.98 \times 10^{24} \; kg$ 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 thd+ovwe(68y- l;s5 p hxh)qecde surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? Thedpyhex8+( 56-lq w; cdsho )ev Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velo8l/q22-*ehi eo ohriwcity to increase while its acceleration decreasesilwh8ho* /eoq2e -2i r?

  00.11: A certain particle undergoes erratic motion. At8w7pn4w(6yxog b-a 2 t1kmsey every point in its motion, 8(km6-wbt yy7go a4e wpn1s2xthe direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of abckptsy a2am+ 76 -o9c string held by a person. The person pulls on the string uniformly accelerating the block upwakp 7 cs6c2o+aa9ymb t-rd 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 situations is the net force constan ff5h k*g5ux thktx1d1gc 84k0tly zero on the objecdkth8 f xk 5gu t5c4*1fhkx01gt?

  13.28: An object is in free fall close to tq 8qinllld 062he ground. A person intervenes and slows the object uniformly to rest. Which one 2in6l8 lq0dqlof 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 three forcao2k8. gjr p+ces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ocaor 2p+8k g.jfF1 and F2 is

  01.07: A force of 6 Newtons and a force of uoa m iw,s9*ag0,wm0i10 newtons can be combine to form a resultant with a magnitude of which of the following*iwi,as og 0u0wam ,9m

  10.06: Which of the following statements is most closely 7 j9hbx0rri 2hsjzs9xu2 z1+oassociated with Newton’s 0jzb+hs ur17z 2o9sxhrj9i2x Third Law of Motion?

  95.06: The reaction force does not cancsyyc2 d ksyb* fc8tuz,)u0.i)el the action force because:

  14.14: A box rests on the floor of an elevator. The elsh 2*ijw8s upodn;.tkem+2rk 5w.8znevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acth wokt; 8p2.mi 28+5ewn*srnuzdj .s king on the box by the Earth?

  15.15: A skydiver falls downward throt+t9 xmm73 rlhsl)txrd61e;nugh 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 the fall?t7ml3ns+h l)rtxrem ;16d tx 9

  06.08: A baseball is thrown by a pitcher with a speed of i:yc,m+zy9 cqeh ayosx6.h 5-+a 5jfi35 m/s. The batterswings.a-c: ihho9e yxcsmaz,i y5 j6 yq+5+f and 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 table. m8ipkm90 5qf8 8wghge 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 forceg9 gqw80k fhmpi m5e88 that the table exerts on the book?

  05.06: The students in a Physics I class)*i :t- 7ho(7ldcnd naf3y fmo were in lab conducting an experiment related to Newton's Second Law. The collected data were d7olnfh adyi3- mt7dn )*(ocf:isplayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at the same time vl lqi; 1gn 2mtg05+whe6qj7j,n ,t gbthe mass of the object was halved,then the acceleration of the object igtnheg07 ,6,ji5 lgw21 +; n qqmtjblvs

  96.15: A car whose mass is 1500 kg is accelerated uniformly from rest to a sk9y1vhhf4 e /hprku.e7i). j wpeed of 20 m/s in 10s. The magnitude of the net force accelerati)kfk /1vwyei.9hrp7u.h4 j ehng the car is:

  99.05: A tractor-trailer truck io4*iz pv.5dz tmr 5f2ds traveling down the road. The mass of the trailer is 4 times t tdfz5vm45 r z.2o*dpihe 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 y4pyi x+8a0jobest explains why large tractor-trailer trucks generally accelerate m 0 8o+iypay4xjuch more slowly that automobiles?

  99.19: A 50 kilogram skyd -dawfi()pj;x/y4 dz jv)b3ater at rest on a frictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s.)f)vp(a;4jdj-3y bdx /iydwz Which statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of mpiwg8,b8u 7y x)2 gnx100 newtons is accelerated y ipu7)n ,8b2wmxgx8g 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 rarw spq7wnmq 549(5zw est by a constant force of qswm(aq9wz p57rnw 452400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg bloc+bwv-a oq3 f-bk with initial speed 4.0 m/s slides across a rough horizontal floor a--3+ bvwof qbbefore coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velon2q,:zhmqqp u4e:-9s we/ wzg city 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to rest. The coefficient of frict9m:, swq e/hng2uqq4pezwz :-ion is:

  09.21: A 20.0 kg box remains at reo9twi zw/3oiej5tk 1*st on a horizontal surface while a person pushes directly to the right on the box with a forcewjz oik315w9i/tot e* 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 acceleek hsj/qz, y)1k m/v*krates uniformly to rest on a horizontal surface. The block travelsky* jks ,1/v qk/z)emh 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 pb */0r tfls5 (+uddaxratch 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 a+tr5r0(xsdbdu f/ *lof 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 izv2j0 sh :sj.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 is j s0.hi zvs:2j 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')9gmngbez7h*kis8 k9 s brakes and skidding to a stop. How farb8 im)g997szh*ke k gn would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an automobile mus6khsb*we4 qu 9t carefully control each of the following devices. Which of these devices can cause 6ukse* 9h qbw4an 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: x1vz irjr7.k with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s t iz 1jrxr7:kv.o 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horiz7ofke516nqw ; qalt p7ontal floor. A person called Ted exerts a force T to the right on the box. A 6fp tlqo7n; a7qe 51wkperson 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 thre9w 6)udm7wx 5ynkota7e roller coaster tracks of equal length. Assume that on all tracks theatxw9 w6 mdn7o) 7yk5u 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 be traveling the fastest at the finish?

  02.28: The diagram below show zh7 ifsf/,ft42 e tu55fs5clbs three roller coaster tracks of equal length. Assume that on all tracks the roller 524f5i5e fs7 ltfb,/ht z fcuscoaster 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 alay-,/1. bevfi sc b ftj+7,tnwnq4f+ vong the curved track from point A to point C under the influence of gravity. What would be the direction4j n+ w-ft,fv faisvtn1.e,y 7/c+bqb of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope7bgq d4 zo2fc0 which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction0 4z 2dfob7gqc 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 blocvfe+ul)*1n: p0msh 2uym:vz wk initially at rest is pushed against a wall by a 100 N force as shown. Thec)0 w *nvmyfhuslz :uev+ 21:pmoefficient of kinetic friction 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 pus:rao: nw ra 6km*a2:fehes a lawn 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 necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various forc*f kr:ae2 nw6:: mraaoe magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither isiwau xy/ 4ah58 moving. Which of the following statements concerning this situationxay u 458a/wih is CORRECT?

  06.15: A crate of toys remains at rest on a slmm72gjsj7on5b +y*6-odij k 4yh uo 7weigh as the sleigh is pulled up a hill with an increasing speed. The *m6-j n 7o uhow7mjg di7+so4 bkyyj52crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?