99.36: What happens to the inertia of an object wh) szv6 bdi9c+ 3izm2ojen its velocity is doubled?

  02.14: An intrinsic property oswafj,khct.+.v1rd;/ ia )m,i6eoi mj nx0 1sf matter is one that does not depend on the quantity of matter present. Which of the following p)n1; i jxi ms6fahtvja/., re+kcmd0osi1w ,.roperties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Eart(*zyuf lv:7w i*.bl bdh has mass vz: u.b lyi( f*wd7l*b $5.98 \times 10^{24} \; kg$ 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 spher86+-btkym qeae is in free fall near the surface of the Earth. What is the magnitude of the gravitak ey+b6- ma8tqtional 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 w c2l:bw3x2c mphile its acceleration decreases 232lpw cm:cxb?

  00.11: A certain particle undergoes erratic +ag0qfkko jgx65ba (1motion. At every point in its motion, thf+(15qga x6bjoga0 kk e direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string y -e1r;jgplh: 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 Neh;yljr 1p: -egwton’s Third Law pair force to the force of the string on the block?

  07.18: In which one of the following situations ihn xr1w-v;x t n3n7g;q5bh6z hs the net force constantly zero on the3- n6b7hr vnx1 x;qhwz5gnh;t object?

  13.28: An object is in free fall close to the ground. A person dqae5 c:vt7* b dl-*l*f 0yjqjr9nka *intervenes and slows the object uniforml9qe l-* adn: 7ldfqty5a *j*0rjk cbv*y 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 three forces, F1 4 iwl0l o4c07sxv ppn:jtx,c( of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant 4:o i7 v0cxwsp,0 ct4n xlj(lpofF1 and F2 is

  01.07: A force of 6 Newtons and a f6 4-klbpf7umd6f ts :xorce of 10 newtons can be combine to form a resultant with a magnitude of7ftd spu:bm6kx- 4f6l which of the following

  10.06: Which of the following statemzz e7e c81yv7oents is most closely associated with Newton’s Third Law of Me o7yvz 8ez1c7otion?

  95.06: The reaction force doesnlcg*7 unx,yb7yun 6 w sw3w/: not cancel the action force because:

  14.14: A box rests on the floor of an elevator. The elevator is accelerating u+/u04m6lfdpi s85) x.vmxkkgaml :hl pward. Which one of the following choices best represents the Newton’s Third Law pair force to the gravitationuh8k+mv5g.6 fk smdxi4l lam/p0l:x)al force acting on the box by the Earth?

  15.15: A skydiver falls downward throuh e:8egig9 unh3- lsa6gh the air with constant speed. Which one of the following choices correctly descrae 63s-g l h8u:gihen9ibes 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)fant3id h*4 m pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the for*a3fdh4 i)tnm ce that the ball exerts on the bat is always

  11.13: A physics book sits at rest onnfijoe34n(xz-;/(phd r7a ;rw mvr4 d 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 x-mwhrn 7dv 434az ( nr/;oi(rfepj ;dto the force that the table exerts on the book?

  05.06: The students in a Physics yz3y e ho9w7:bd (mnrylu:0 v+I class were in lab conducting an experiment related to Newton's Secovu(9m:bd7 on+0:ryzhew3 y lynd Law. The 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 object were doutn :v:(zxdn-omfq2ho5a .b c-bled while at the same time the mass of the object was hal.- :5-vamtoq z: xcdh(b on2fnved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is rcv2l0fiiv 82 accelerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the net forc0l2fi28rv cvi e accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the tdw/7bn*d u:z w;av c:tw51fb,gel2tu railer is 4 times the mass of the tracv:ea:;*wn7g2 1wdutt,fc /zblb d u5 wtor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principles best explains c-znd/ ng ;hs59*o ficwhy large tractor-trailer trucks generallyfz59ghcc -;d noi s/*n accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a fra,9t5qal ile*ictionless rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Wa9 ate ll,*qi5hich statement describes the subsequent motion?

  00.13: An object near the surface of the earth with au-w 7:iqskp-mtz w d773cdsj5 weight of 100 newtons is accekdw :-q7jsus77pwt imzd53-c lerated 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 byg:k n3 rz-z3 a(v+,3vvoakz cu a constant force vz,:ork+-v a3nzg3 3 (k zvcuaof 2400 N. What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rough horizoum/m.z- w8wma cadd-l-n(e u*ntal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the ua-mwu-dn-w8zme/ ldcma ( *. block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slidescp 180u4eovcd 8.0 m across a rough horizontal floor before comi vudcop4ec081ng to rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a pergl1*c y:r gb9json pushes directly to the right on the box with a force of 60N. The coefficient of kinetic fr1bc:g*gy lj r9iction 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 ufyr+6mp5 s 2n1pp5l:svxzg f-niformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the slids5zgy :n-f2xsmfp rpv 5p+ 6l1e. 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 slide w3f)z lgxtb(eg ywk:g21p p8*s 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)2t lpxye(f1: gwwpk3*zg 8gb distanced. The coefficient of 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 acroso,mi1-g6a5 bp )o sliqs 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 lom5pibqgo1i)s6, a -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 ctlhwd ,z c*k)5ar makes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had bed,l z5k)hc tw*en traveling twice as fast?

  99.39: The driver of an automobile mustr)avrzwv :/m/xh z5n, carefully control each of the following devices. Wh x,n :a/h)5vrvwz/ zrmich 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 rocket with a weight of 15000 newtons is 240o:kc5 c:y3 gqi00 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeofgo:kcyq 3: c5if?

  07.21: A box slides to the right across a horizontal floor. A person c: x d.fo37wxhcalled 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 d f.hw:ox7c3xthe 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 eqehk3ohkax+35xb.ywq o- e) oebw: / 56vm(grzual length. Assume that on all tracks the roller coaster carts start froeb)6.k5rwox q(b/: +3oxa5h gkm3- vehzoyewm 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 traco/c74oqv 6j hiks of equal length. Assume that oo6/ cq jvh7oi4n 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 reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along 2h2r xm a2jm464sfy rmthe curved track from point A to point C under m4hy42a26m jmr2sxr f the influence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is draggedkr1y f2p+s 3nkp:tg*e across the floor by a rope which makes an angle of 300 with the horizontal. Which of the followi:fpne ks2p k3+*rt 1ygng 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 initial1qqbei ;, r0 pdmss0*dw rw 8rb)yag(;ly at rest is pushed against a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30p; ,;b*8m rd(rd)1ws yire 0aqgsbw q0 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 lawn mower across a horizontal patch of grass with abxhhr j7m6h:l 48nww1 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 whl 17b n4h8h6mwjrx: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. Neitd.)ej-1+x10 ue/koe wraxc del,k :ejher is moving. Which of the following statements cj1rweeaueced,1. loxd-k /:x ekj 0) +oncerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as /f*b*s 8jt 8y;fznufeab* 0oithe sleigh is pulled up a hill with an increasing z j f/*8tbyusfbi n08a*;f* eospeed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?