99.36: What happens to the inertia of an object when its velocity is doublyh, zj6b6 fe:xed?

  02.14: An intrinsic property ofchpzlo.if 8;xg0yz /lhs 0dmlz83 h4. matter is one that does not depend on the quantity of matter present. Which ofdim4ps/f z 0l.;z lh 8cyz.lgh83ox0h the following properties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the qkfzdc,p 5 7,q9opo (tEarth has mc9qk7,(pqf dpot ,zo5 ass $5.98 \times 10^{24} \; kg$ 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 ik nwezjj1p :1 /z/e9lthe surface of the Earth. What is the magnitude of the gravitational force acting on the ea znk iwe/ejj1/:19zlp rth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s velocity to i6 3sog t4;edjfncrease while its acceleration decreases4;ftsdg e6o3j ?

  00.11: A certain particle undergoes erratic motion. At every point in i0kz+ k8h)pvm1k ctds 7ts motion, the8tc1p0) mdzsk7k hkv+ direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the ai(4f j ol/o +zqqs*mm2tpn7 se8qh p9r.r 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 Thirdh pn+7qm4 sjmq2l z8ef(po/ro s t.*9q 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 constyl4tjw88 ru n2antly zero on the object?jwny t l82r48u

  13.28: An object is in free fall close to(odhf: e- jb /e(tsqx4 the ground. A person intervenes and slows the object uniformly to rest. W:fje d((bt4hxs- oe/q hich 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 of 30 N, F21ra0t8h7wvi fhs s.h ; of 50 N, and F3 of 70 N, acting on it. The magnitude owtr;108vss f hih7 ah.f the resultant ofF1 and F2 is

  01.07: A force of 6 Newtxzl 3f o;s5( sof(ky.ions and a force of 10 newtons can be combine to form a resultant withyk 5 ixo3zfs(o.l ;(fs a magnitude of which of the following

  10.06: Which of the following statements is most closely associated with Newto)xjzk6 t+sll ;n’s T;sxlt jklz)+ 6hird Law of Motion?

  95.06: The reaction force does not cancel the action forcehp+r1r;cpt3y because:

  14.14: A box rests on the floor of an elenrr9p0 w27. wf1jbzpxvator. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the grafrp7rwj2 n1z wxp 0.9bvitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constaniblw+ 3i 3-vn0 d+aq)m 7v pvxgdjx*r)t speed. Which one of the following choices correctly describes the Newton’s Third Law pair xri dv+3)mdv -w7jg03av)i pxbnq*l+ force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is throw+6 uztcy)xo e;n by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball 6 eyz)t+c;oux exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the book is a tj:hx:lzb/9+ 9z+l h-n(tgurh4 ojhhcalculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the bo9h h/jnzjuzbrg :(hhh4o +t- 9xl:lt+ok?

  05.06: The students in a Physics I class wekqu;.;h kell3l*dhc 6 re in lab conducting an experiment related to Newton's Second Law. The collectelh*;qhl l;ec3. 6dukkd data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force onp7d0j.t/ 5ga 2ugjd-jqv e /qo an object were doubled while at the same time the mass of the object was halve0.gu5aj2dd7ojgqj ve q p/t/ -d,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is accelf)7d wnb4n6d perated uniformly from rest to a speed of 20 m/s in 10s. The magnitude of the ne4d wdfp67nb n)t force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of the t.ktljay7 5 w8krailer is 4 times the mass of the tractor. If the tractor accelerate.k yj7wa 5lt8ks forward, the force that the trailer applies on the tractor is

  99.16: Which of the following principleqqh(a1f r evccr .m989s best explains why large tractor-trailer trucks generally accelerate much more slowly thr1c e 8mvqfca.9rq(9h at automobiles?

  99.19: A 50 kilogram skater at rest on a frictionles-m)x02svfeq*8oy hsbw 5 byg (s rink throws a 2 kilogram ball, giving the ball a velocity of 10.0 m/s. Whq-g w2f0y8 os)sbh*vbex (y5 mich statement describes the subsequent motion?

  00.13: An object near the surface of the earth with a weight of /,auv 0ywg9tc 100 newtons is accelerated /,vauyw ct0g9 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 reagea57lp .p9 kst by a constant force p9 lk 5a7e.pagof 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 aayg:;vlmtatc 834gz,afr8 y 4 rough horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How far does the block slra4vf m;yag3z 4agl t8,:y 8ctide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slides 8.0 m across wfrr 8afn:mbndmt:h 9mx 06-0a rough horizontal floor before coming to rest. The coefficid8axfm:60-: r tr 90mhwmnbnfent of friction is:

  09.21: A 20.0 kg box remains at rest on a horizontal surface while a p45+e(cdhqot*(q ,ouxuz x l7eerson pushes directly to the right on the box with a force of 60N. The coefficient of kinetic friction between the box an(h+ecq,d*7qlox4oezt5xu u (d 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 rhks/ z.p4ox;h est on a horizontal surface. The block travels a distance of 12.0 m during the slide. Which one of the following choices best rhzox4./hk ps ;epresents 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 speed v w w/ue8w; 8wyxnith its brakes locked. It then hits dry pavement and skids to a stop in a distancew wy/ew8nx ;8ud. 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 across a patch of ice a.dh dd(kj.l*-ku++y 7lsy zvpt a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distap+lykydd 7lv.jzsh kud+* ( -.nced. 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 ma5chqnuk *3 6ycho;l)mkes an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had3huqcy 5mh c;knl*)6o been traveling twice as fast?

  99.39: The driver of an automobile must carefully control each jnl( 1ewo+ l/zof the following devices. Which of these devices can cause anoe(/+jwlnl 1 z 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 24004)rnezij +l: eusu4: u,z,cep0 newtons. About how much time is needed to increase the rocket ’ spr: z,l4p4e isj : ,enueu)cz+ueed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right across a horizontal flooy5h s (xvt;bg+r. 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 thaghv (sxt y+b;5t 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 belowc3y,rz+ f:i z kmhvp24 shows three roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevation and moves frictionlessly over k izp h+4z2cm fv,y:3rthe 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 coastesg 91h +sv5hulr tracks of equal length. Assume that on all tracks the roller coaster 59hls1+gv ushcarts 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 cl xn7lua20 e::3gpvj the curved track from point A to point C under the influence of gravity. What would 3lcg27 p:u:nj lvx0 eabe the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is drapyod /t(6ot5f gged 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 to move the crate at a constant speed od yf(otot6p/ 5f 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed again)- nf/89 sf lc yf)ivfj83h ikl/ogo)est a wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30v/h/9) osfgic) e8l jk-fi3fy)n 8olf 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 wlgp dwui11:k*luk usk- vp75-ith a constant speed by applying a forg5d 1:u7uupl-ikkv k-* swpl1ce 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 a crate on a tab1zcq l0ficnv ci;(7 v0le. Neither is moving. Which of the following sncl;ci v(z7if1 0v0 qctatements concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh 0ow s20bumuf9mq.f(ois pulled up a hill with an increasm o 9(. f0uu0m2fwqbosing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?