99.36: What happens to the inertia of an object when its velocw2pw)g l+wt5 xity is doubled?

  02.14: An intrinsic property of matter is one that does not depen9yp,3iw:x1gtdygb9 l sj v2)wd on the quantity of matter present. Which of the following propertig,j bl w9i9px dg3:vyy ws21)tes is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the f..)ph 9u34rpvlbdcu Earth has mass pd. 43bcu p r.)vf9luh$5.98 \times 10^{24} \; kg$ 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 of the Earth. What i r9j8+ul/gj(y l93ja/axch,+ duhe e cs the magnitude of the gravitational force acting on the earthcuedc/ / lj9a8 +u 9,jxhjge (lary3+h 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 whi 8rc. 1 ,oltpz6xvdu+fugh ,2ule its acceleration decreases.v2u,8pcl,r 6go h +fzut1udx ?

  00.11: A certain particle undergoes 4u)l; 1cddtpca9aeafj)*4mee( g b0b erratic motion. At every point in its motion, the direction of the particle’s momentum 4f )4 9(c;b*l1d ajceetugaedp )mb0 ais ALWAYS

  17.14: A block is suspended in the air at the end ab 8 4qvityn;4; erpq-rzm4r( 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 string on the blocv-eb4n4i q4t r;q;z aryrm(p8k?

  07.18: In which one of the ox0xw b/3b2 iqfollowing situations is the net force constantly zero on /b2oi3w x0qxb the object?

  13.28: An object is in free fall close to the gro (qm/vg /rk8v,bg**bzgyh5n uund. A person intervenes and slows the object uniformly to rest. Which one of the following statements must be /8ggh *y gr bk/bv,m*uqv5nz( 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 863 bx/b nxmzt- k-f 7w,vzcwr to).xnthree forces, F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude obntt- o ./8zxnw zbck-m3)rv6f7x,xwf the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and 6o-zpfz9m/ 1h xtes4ba force of 10 newtons can be combine to form a result6mf1/hozt 9ebp4-sxz ant with a magnitude of which of the following

  10.06: Which of the following statements is most closdpol28/cvz c9ely associated with Newton’s Third Law ofczpd cl8/92 ov Motion?

  95.06: The reaction force does not cancel the action force be bn+l.,hrzrf hf)*z5ccause:

  14.14: A box rests on the floor of an elevator. The elevator is acceleratinbco u0itc(b3bcx ( o/r(c6n4 eg upward. Which one of the follc63(c/o ((o n0x4beuccrbtibowing choices best 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 air9idn8jf4 (/ vc nnf+cu 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 durf n8n (n i9jvcuc/+4fding the fall?

  06.08: A baseball is thrown by a pitcher with a speed of 3)q)g1aqxd vs a6bh l825 m/s. The batterswings and hits the ball. The magnitude of the force that the ball e2lav8q) ashq6 g)1db xxerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a calsucf0 e almsv(rl0z7r 37t(8jculator, also at rest. Which one of the following ctme3 la0 c( (svzr8s ujl70rf7hoices 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 i/jxy *5ma5zvu3lh ,bz+(k)z f rcjx.jn lab conducting an experiment related to Newton's Second Law. The collected data were displayed on the graph at the right. From this ,3 z+zz.r/m jxcj55*hklyj(uvfa x)bgraph, what conclusions can the students make?

  99.03: If the net force on an object were doubled while at thekl61q-nv+jt ck(w zaumi.0+6fcn : vr same time the mass oi.q(rt na - uc1nc:jl6m+fz v vwk06k+f the object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelmu-1t ue7t;wi-jrne 2erated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net force acceleratintj n i2-1ru ;weue7-mtg the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass ofoa7xa5ofn3:c t 4 ;pso the trailer is 4 times the mass of3psco:7;x4naoa5t o f 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 explains why large tractor-tr w-8ba wywykg;0w-s b5ailer trucks generag85wyswb w-b-k wy0;ally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at.v zfop)g)z+f rest on a frictionless rink throws a 2 kilogram ball, giving the ba))ogv zfz+.fpll 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- n-mcozbzy7ce8 -p1f weight of 100 newtons is acceleratb-yc--mn18 p7ec zzfoed at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200on kbs :z51nbmm .n.:o kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s after beginning?b5mbko.:s:n 1n.monz

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides acxiq/r bh9u2: br i3bu3ross a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block ibi h9b/u23rq bu3rx:slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across a roug-3rwx/sg- ;mq v pffp1h horizontal floo; -qvrwxfmpf-13p/ s gr before coming to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a pers2piyp; 1-ahps on pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between;p1yps i -hpa2 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 initiallh8:6 +s a5u j gtzykcrw:wa:.vy moving at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of tvus+w a:ag:5.8j 6 kywrtchz: he following choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides acrosr lidt5kx -e:hy4 ;6xcs 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 anx-i k;4x lhet5: dcy6rd 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,(d:xs.j :u /yzvwtlr a patch of ice at a speed v with its brakes locked. It then hits dry pavement ( r:.jd ,zut sxv:wly/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 save6l5; cp frcbro) /aj:us99 lamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been tr9fa/rb)s;p:aje r olu596ccv aveling twice as fast?

  99.39: The driver of an automobile must carefully control each of the f)q98xc h9lqz*7xcd+rz4vv n ggh+w.iollowing devices. Which of these devices can caxg8ch4z9 v.r l*+w q9gvdhn7icxz+)quse 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 weight of 15000 newtons is 2400e8 / /a(rcatt3. renzv0 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s ne ar cern(tt/v3 .aez/8ar the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal flcoa -rfrn c3bmq( .1e8oor. 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 the box accelerates to the right, rank the sizes of these-roc(m.nf 38bcrq e1a three forces exerted on the box.

  02.27: The diagram below shows three ro6 b7 8jd9mzxma*j d vt m(n/n(fr76nculler coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same eleva7z m c98vmu*dt fb (6nj6jmxnrn d/a(7tion 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 shows three rollgi twy-;a 8,i4ku r,fter coaster tracks of equal length. Assume that on all tracks thr-g8,afti; ywu ti ,4ke 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 reach the finish first?

  02.29: Assume the rollercoaster cartrollsl3ov+rali 4rxhq)./lnon 9q 5 frictionlessly along the curved track from point A to point C under the influence of . 4 x 9 lnoqhvqlnr)olr35i+a/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 acrqtneo 1h, y,5koss the floor by a rope which makes an an n1h5,o q,tkeygle 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 in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed againsta*o)d . fa;pxr a wall by a 100 N force as shown. Thecoefficient of kinetic friction iofrx .;a)pa*d s 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 ,rc ;n6am inz24mbm3llawn 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 m,cn rlmni 6b2;4mz a3magnitudes 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 ceu keb vdedxqf(84kp+46n62 e rate on a table. Neither is moving. Which of the following statements concerning this situ4nke84d ( eu2 q6ebek pv6x+dfation is CORRECT?

  06.15: A crate of toys reman3vz /4sw6 (sfv-nqy ja:ghavc7 dk -*ins at rest on a sleigh as the sleigh is pulled up a hill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hv:7d gw -h-c4aaqn v(k* y36vf/nsz jsill?