99.36: What happens to the inertia of an object when its velocity is nuj4o/((ja dg5kr-8f0vd mt hx m3k l0doubled?

  02.14: An intrinsic property of mat1w6qqik 1( ehkter is one that does not depend on the quantity of matter present. Which of the following properties is NOT an intrinsic pro k1qiwk(hq1e6 perty?

  04.16: A 20 kg boulder rests on the surface of 66pn xc9:ijxe)t+cnak70 lbkthe Earth. Assume the Earth has mac9xt06)n jk k6cip b+7xale:n ss $5.98 \times 10^{24} \; kg$ 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 is thhl:*)sz w/it ze magnitude of the gravitationizlz/st ):h *wal force acting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible g ;juw :.uygnu vy-(q,for an object’s velocity to increase while its acceleration decrease (:jgvyug;uw n-,uq.ys?

  00.11: A certain particle fir25xi jc 2n3ms:-uqundergoes erratic motion. At every point in its motion, the direc3nq2mu-srici f:j52 xtion of the particle’s momentum is ALWAYS

  17.14: A block is suspend+ ew0;geg9qef ed 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 pai9feeqw g0e+;g r force to the force of the string on the block?

  07.18: In which one of the following situations is the nkmrygl 90v4qk6bu e9)et force constantly zero on the kq vr9uky9l6gm0b4 e)object?

  13.28: An object is in free fall c +6,, soi/ltb+zow1c6fp bvfb lose to the ground. A person intervenes and slows the object uniformly to rest. Which one ilwv p,+cbz/6f 6tsbfo+1,boof 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 forces, F1 of 30 N, Fl96, 6;gvw nxmhv,shk 2 of 50 N, and F3 of 70 N, actixhkgmn6w,s vv; 9 h,l6ng on it. The magnitude of the resultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can nr 0u7q0cyp( xm6t2 hhbe combine to form a resultan2uy nc0h6rxp7h(t q0mt with a magnitude of which of the following

  10.06: Which of the fo:t w9kpda:f 8kllowing statements is most closely associated with Newton’s Third Law of Mt w9k :kpfd8:aotion?

  95.06: The reaction force does not cancel the actiohk ;y4 rm8npv3 7tozu6n force because:

  14.14: A box rests on the floor 37t- qe8iy6-jnvu2j y ;xksax l ce4w/of an elevator. The elevator is accelerating upward. Which one of the following choices best represents 4sxul-2ik3j y /8awec;qv-yj x6e7tn 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 a 5g5d,sfsc aj:ir with constant speed. Which one of the following choices correctly describes the Newton’s Third Law pair force to the air j:5 s,fcd5ags resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitc9kd3ba / ulce6her with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the forc k93abce6udl/ e that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of tze.y2(2e2c qnaiaszs )1olz ,he book is a calculator, also at rest. Which one of the ylszaaez2.e)nqc22 os,1(iz 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 experhf-*en*pg -/dejd 7d; j c+jfwiment related to Newton's Second Law. fddjd/-n* +ge * ej7jfp ;-chwThe collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an ob ajh/6x4b i p;31:cmyaygkx 2uject were doubled while at the same time the mass of the; jua/ 6bh:xp4y2 a kxc1yimg3 object was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelerated uniformly from restvk.jj7 mxghhx de 2(y if396i5 to a speed of 20 m/s in 10s. The magnitude of the net force accelerating the cmf 6 h(iygdvk7 .5e93jjhxix2ar is:

  99.05: A tractor-trailer truck is travelislj;ktsh:l))d /*u*a* gg bdzng down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that *:j*ausdtdz kh ;gllg/b) )*s the trailer applies on the tractor is

  99.16: Which of the following principles best explainw0hry: r7c fr;0)st 4q;akfn ks why large tractor-trailer trucks generally acc;r;fc40ksn: ka0h7 ry fq)t rwelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink thru-y e h50yi7uuhsz+0bows a 2 kilogram ball, giving the +eu5bsyz 0h ui7 h0-yuball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surrigj z6ralkql/n, 589face of the earth with a weight of 100 newtons is acceleratejka8 q,5l g/r96ir nzld 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 rest by a constant iqle7mff x:/9 x5h9dtforce fi95:fdh x x9letq7m /of 2400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial s z;jdoga ;d/v(peed 4.0 m/s slides across a rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does tdd/( ;jg zv;oahe block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m acrossqao6q:w ms38v a rough horizontal floor before coming to rest. The coefficient of fric8wovq 6q sa:m3tion is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a person pusacxum5z 7gwudht0+* - hes directly to the right on theu 0 za7mcxw*ug+h- t5d 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 omb;(48sv qwtwn a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best representsws8q4(m b; twv the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides across a patch of ice at a sp6kr5ng). 60ausw a jfseed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic frictif a).us50g ar6s wj6knon 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 aldm,a8 tp 35yu 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 r5pa38 ,tum lydoad 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 x-b6 w-msh yt/car's brakes and skidding to a stop. How far woy-bt m6xsw/-h uld 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 followa (dywnz v,-46vj8apqing devicesvvy(z- 6ajd4q, wn8pa . Which of these devices can 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 rockere;3a+k:mo8c 3hqx25dh ovnyt with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near thede 5 3x ma oqyocrnk3:vhh8;+2 surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A per lqpik 3*55bzkson called Ted exerts a force T to the right on the q3ki5l zp5k b*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 vq t dn(,b9m vrx+o4vyz:k3t (equal length. Assume,tm:q(od 9 z nvx3t+(bk ry4vv that on all tracks the 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 shows three roller coaster tracks of equ 1smb)ya1ru c54+wau9 bhwu(nnjv)0 sal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves fricsn(bh 40n ru1ja5m) b wsa+w)vy91ucutionlessly 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 rollercoast 2 jk kp1y(o0q8xwcbh7er cartrolls frictionlessly along the curved track from point A to point C under the ink 2q xhpcj7wo081 yb(kfluence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a ms q-cfemq*io/ q/1q 0 (9ioetrass 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 /qi/t0q 9i1emqe-(oqrf*c sothe 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 gc9/ k g. 8:qeqr5uqqdat rest 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 qqkg qd .re8/u:9g5qcof the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a05v / doh0ntkdle gg9: horizontal patch of grass with a constant0gnt5l gd 9vdh k:e/o0 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, f, N, P is CORRECT?

  06.14: A book leans against asvdtvico2l xi6.nvy (g.-9j7 crate on a table. Neither is moving. Which of the following statements concerning this si yvs .2ixcd l7t .vv(6j-9ongituation is CORRECT?

  06.15: A crate of toysad v;b .2aduv8 remains 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 respo2d .;d uv8bvaansible for the crate’s increase in speedup the hill?