94.01: Starting fromsj qq v ,m7c,dtuof,9/rd-xf0 rest, object 1 falls freely for 4.0 seconds, and object 2 falls freely do-q7,cd sm/q,0vtxfju f 9 ,rfor 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a wz qsu2uu90j2 fav)p(ml*9 qz final speed of 20.0 m/s in a time of 15.0 s. How far dz2 w qf)u9au *9j (zvpmu2ql0soes the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It,g+bphnos cj)04 uj)v lands 6.0 s later with a velocity of 40 m/s.)+oucsgh4bjj0 ,n )p v What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is /os*vx ;sdh)kmm2 lj) 85ft yuaccelerating vertically upward at sujvm2 ) os*ltfym/hx5 ;)8d k$10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found to be moving2mdza h s.ps-8huo1 y: downwards at 27 m/s at one instant. If it continuesy- 1u.2omh8d hpa s:zs to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and eia.go6cvch g.:v ek(- (tr4uaccelerates at $0.80\;m/s^2$ for 10 s. It then continues at constant velocity. Twenty seconds (20 s) after it began to move, the car has:

  96.17: A ball which i mm70 hlmw.xn354 jt:jq2hfv ms dropped from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be igmhmj4mnf ljqv0 wh27t.x3m :5nored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4nngu1/nly:347u 1wde )ilna a.0 m/s in the upward direction. Whn4uy1ng:a)n17ual 3 l wnie d/at is the approximate velocity of the object one second later?

  98.14: How long must a) -l+uv wsfx- p,gv:ni $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling objecmx :z)/tj250citrvs5 fb9d, ifp* tzmt is found to be moving downward at 18 m/s. If it con0jztc5 9 i)pdixvm/ fzs:ftrt,*25b mtinues to fall, two seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s untin)26c*qu .jhskz 5won l reaching the ground. What was the height above the ground.5 ) qzcn*owu6skh jn2 from which the object was released?

  11.06: A ball of mass =0.10,5h vlkwzl pr-x-.t 35s l5wix0 kg is launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball reaches its maximum height, which one of the following choices best rkltixw sh5 xlr5pv-l,z-5 .w 3epresents the magnitude of the net force acting on the ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched str7x.; lb/ z3wvzfo,gc oaight upward so that it rises to a maximum height of 12.0 m above the launch point. f;3/7 glv ,o .ocxwzbzIgnore air resistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined gk6cec61m7+u xmep; bp3/kp vyv.i 2jplane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far doeb6eki6j v/ p3;ekc7x.21vpp yc mm+ ugs it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower w7aq qnrj0/ q/zith a speed of 15 m/s. Coin II iz njq0 7q/raq/s dropped (zero initial speed) from the top of the tower 2.0 s later. Assume g is $10 \; m/s^2$. How far below the top of the tower does coin I pass coin II?

  02.04: If a ball is thrown directly upwards with twice the initial speed dds v5vq72;fp3sfw02uv) ov eof another, how much higher will it be at eo 2du fpqwfd5v)7v20v;sv3s its apex?

  02.30: A box falls to *vh0l0kzg c7 ljtc8(j the ground from a delivery truck traveling at 30 m/s. After hitting the road, it sli*l zckgth8jj7 (0 clv0des 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s 7 m. oi g)v;vmk/i-pednear the surface of the earth. p-dv.m ;eg)v7m iio/kAfter two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertica, 0evn izj3i,*re a6gylly upward with different velocities (1v, 2v& 3v respectively). The diagram indi yg,n jr ,v6*3ize0eaicates the mass and velocity of each stone. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are lxs xvt9if2( j9aunched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2M, what is its maximum attained height above the launch i2xvs jf 9(9txpoint in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After eacckliinu(3w g -va o6*:h bounce, the ball reaches one-half the height of the bounce before -aci6u*gnv(ok w 3il :it. If the time the ball was in the air between the first and second bounce was 1 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile inx-- tjw yuj.6:krwldiy + +)me free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizon.-i j jm)+:weyrk6xwuly-d +ttal?

  05.02: A pebble is droppef3kpi rzg-8.p j0eow2ap7f6ed from a high vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground-k2fg3re6 .0 ap zofj7ep8pwi? Ignore air resistance.

  06.03: Three students were arguing about thexd/0ap/ls-kww 1h,vc height of a parking garage. One student suggested that to determine the height of the garage, they simply had to drop tennis balls from the /h ,p/aw- vxsd0lcw 1ktop and time the fall of the tennis balls. If the time for the ball to fall was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving a1q. t1e( )sbs/tn,1tho x +mtux65aylmj-n calong a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and1 xh)q+t tmaenlu5y xs , s61mb-(n.toj/ t1ca acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (down the plane2sq dw .xl: ;tlwow *,v(zugr31ye3 zq of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three paths from shortest to longest in terms of the amount of time (T) necessary for the object to be released from rest at point A and travel to point B. Assume that in changing direction that there is no qgz(uz,dy:sw1lrtx;w32ew o. v l3q *loss of energy and that it takes negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half a second la, g4tu )shmldja-1*i;mdb7ovter another rock, twice a*gu1 -dmam ,l ts;o47vbd jih)s massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.b ,p;a6):cmrso pbast g ;-u9s5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially moving at 1 m/s. How far does the cart trav;a )m6 s gbrst;u,sob p-9:capel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a track. ml. yj:sa:xgy.x 03jxThe cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initiall:m y.0xsg x .l:3jayxjy moving at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts from rest and runs in a strthcd5.u:/qz4or4 ;kvi wue0.gjhi n:aight line with a constant accelet 5iqewg4j4 doh;z:r0vu.i n.c /u: hkration of 2$.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initiallyfg8g1o qru 3n4c pnh2l017b bx at rest falls without air resistance from a height h above the ground. If the ball falls th7 n g8ornu1f2bglh1p q0c bx34e first distance 0.5h in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to sug0y*ixxn ) *the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that of Object 2; Object 1 has one-half the acceleration of Object 2. After some time T, the velocity of the two objects is the same. What is the ratio of the distance traveled in this time T by Object 2 to that traveled by O**x xg)u0 iysnbject 1?

  12.26: An object is thrown horizontally with speed 10.0 m/s from a 9n yxdx9) z6lpheight H above the ground. The object reaches the ground with a speed of 20.0 m/s. W)dn 9y xp69xlzhich one of the following choices best represents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in free 4-fl gkz8xur8 fall until it returns to its initial launch point. Which one of the follo- x8 4rkf8uzlgwing graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through how many meters does th45cp 0 kygt*hgp/6kta e objectg 0k 4*ckyga5h/ttpp 6 fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface iwyfk6mg3d6 do;i. . lawjlh0 (n a time of 12.0 s. What was tg j y o.kdhfld6i0(w.a6;wl3 mhe initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart unifo0, gd:a ft8 j12deh6bb (sgbwgrmly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Th 1ggbfbag2hds 6,e (8:b tjd0wrough what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds lr/ xxv)4cfzxwgv k (0o3;ib 9o(rqlm 2ater, the car is moving at 40.0 cm/s to the left. The total displacement of the car during this time is 10.0 cm to the left of where it started. Which one of thx rk m)f(3vxczo;v9l4qx0 gw(r2b/i oe following choices best represents the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Five seconds latepg8e 4tvjin 1xwy/2iua op2.it (il3 .r, the car is moving at 40.0 cm/s to the left. The total displacement of the car during this time is 10.0 cm to the left of where it started. Which one of the following choices best represents the magnitude oxue /.t8. li3ppt aygj4wi2o ivn21 (if the average acceleration of the car during the five second motion?

  14.33: An object movex: vsgtxai3fa8fp (8fam ,,z*s with constant acceleration starting with velocity $v_0 = 5.00\;m/s$ and ending with a velocity of $v = -1.00\;m/s$ in a time of 3.00 s. For this motion, what is the average speed associated with the object?

  15.05: An object initially is moving upward while ihvr(3,xzim 4rxp2;3:j7w n g nw(eyunuw9g/b n free fall. Which one of the fo 4m wz 72(uxw3ry g,n3hnxnrbwp9i v:g/ (j;eullowing choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 2p7c1 m n6p4w jf)jonf*0.0 second trip in two stages, I and II. The average speed of the entire trip is 10.0 m/s. For stage I, the object moves with a constant velocity of 6.0 m/s for 12.0 seconds. What constant acceleration must the object have during the 8.0 seconds o n)nwfj7mp *jfc 6p4o1f stage II?

  15.32: An object moving along a line completes a 20.0 gw ; thi2kai3-a ),mdnsecond trip with an average speed of 10.0 m/s in two stages.i;ka)nh iw,tm g32d -a During stage 1, the object moves with a constant velocity of 6.0 m/s to the right for 12.0 seconds. What constant magnitude acceleration directed to the left must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small :u9 viyt2nl :nfsji -2-cdc*frock is dropped from rest. A ball is launched straight downward with an initial speed of 36 m/s at a time 2.10 s after the rock was dropped. When the ball has fallen 28.0 m further than the initially dropped rock, what is dn9: cnjt iv2u-f ycfl2*i: s-the speed of the ball relative to the rock?

  16.36: On a straight road, a self l hv.y9;m 3www:f*hdg-driving car races with a robot. The robot acceleratesmw3.gf ;d:whl v*h9w y at $8.50\;m/s^2$ until reaching its maximum constant speed of 15.0 m/s. The car accelerates at $5.60\;m/s^2$ until reaching its maximum constant speed of 25.0 m/s. The car and robot start from rest from the same location. What is the maximum distance that the robot leads the car during the race?

  17.44: A ball is launched vertically upward. The vertical xj;b/qp1hru9 im5q /k8vb mgp. ec*f)position of the ball 0.70 s after release is the same as its vertical position 4.10 s after its release. At what time is the object first at a v*.5p jq1cm/pmeg) kxui;b q89vr/bhfertical position that is one-half of the maximum height it obtains during its flight?