94.01: Starting from rest, object 1 fally) 6 unfr*g5tbxenhzux2nt0+6 ohb7 t:jk* 9ls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to objeczlot05xnhbef jhu9yu+**x :7g26kt 6nt )nbrt 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final v;p4k 5o5hlus speed of 20.0 m/s in a time of 15.0 s. How far does the car travel duriou 5s4k;5pvh lng this time?

  94.03: A ball is thrown off awa*;7 ox)p6:rzzbzo s high cliff with no horizontal velocity. It lands 6.0 s latersz6zzx;ob par:o7*)w with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of th4,t9g0 fzfcu86 -ces5n*,)pmvbs4udwx uwi ge earth is accelerating vertically upward at m6n4,)b8fcfd z pxwg94uvsw, est*uu0i5 -cg $10\;m/s^2$. 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 moving downwards0*gau6nq2rru8mobc 3 at 27 m/s at one instant. If it continues to fall, one second later the object would be moving with a downward veqrou c23g60 an*m8 ubrlocity closest to:

  95.39: A car starts from rest and accelerate; bwh63w3manxvn p/( 2xw3dzws 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 is dropped from the top of a building strikes the gro(6sxj *s dh7 sq *ts)2vgugo+p 5 l8vl0zre(eeund with a speed of 30 m/s. Assume air resistance can be ignored. The height of the buildingsl*ez5 s dg78*t+ )gss6oq(v 2e juxlrp 0(hev is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in /x3cwufd/ x ug, iwl0.the upward direction. What is the approximate velul0xgdx/,c u. /wf3iwocity of the object one second later?

  98.14: How long must a/zs.1 vqwf2osyg +aw5 $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling obj29 i)c, 7b)c rceajalmp1wu(v ect is found to be moving downward at 18 m/s. If it continues to fall, two seconds latea7 abel (mcpj)w2c9ivu1 ,rc)r the object would be moving with a speed of

  17.02: A small object is released krk n*1 qxxq):from rest and falls freely for 4.00 s until reaching the ground. What w: k1nqk)*q xrxas the height above the ground from which the object was released?

  11.06: A ball of mass =0ngpsro6m;+1c u m/ow 9.100 kg is launched straight upward so that it rises to a maximum height ofo+m ;m/w cpsu6 9g1ron 12.0 m above the launch point. Ignore air resistance. When the ball reaches its maximum height, which one of the following choices best represents 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 launchejzqf-/d- ql- dd straight upward so that it rises to a maximum height of 12.0 m above th d- jqlq/fz--de launch point. Ignore 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 plane has:3dxzimo(z9 l speed 0.40 m/s two seconds after it begins to sl:(z i3ozdmx l9ide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrownry --,y 4yp fm,rut8tg upward from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropmt-u y4, rfy p,tgyr8-ped (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 direcd+j j8f ig-z2qcu8t9y ocr61 itly upwards with twice the initial speed of another, how much higher will it be at itsdz6urj2 yco j+-i 8q9fi8 t1cg apex?

  02.30: A box falls to the ground from a de.wfb8nwje,pp l-lw8o8 vv1 8xlivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to wj8p8wvw.,x po8-l1 elb8 vnfrest?

  03.29: An object is thrown upwa6ez a5y r,i/ on+.kmb fb9(hnzrds with a velocity of 30 m/s near the surface of the earth. After two second z+i aknzoy.n(6h59mfb, br/e s 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 thrown7m( owy,)u+o* la oawb vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and veloc o7)uob(a *wym+wla,oity 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 launched skxt.ne 4x:k 9atraight upward with identical linear momentum. Object 1 has 4.a x:ktkx en9mass 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 point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown.8lepj 29qp7j27x cbo 9iyekz/ After each bounce, the ball reaches one-half the height of the bounce before it. If the time the ball was in the air between the first and second bounce was 1 second, what would be the time betweenlqp 9pkyoce 72bz 2jje/9ix 78 the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achie 0)uv(ial;/of wcr4 naved its minimum speed during flight. If that minimum speed was 15.0 m/s, wha4wi/av (ulac of);0rnt was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high.zw: ybe m2tq9 vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after th9zt:m.qy wb2e e pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. One zzg g(r1xrc/,t0; mnostudent suggested that to determine the height of the garage, they simply had to drop tennis balls from the top and time the fall of the tennis balls. If the time for the ball to fall x, z0;1tc (rr/nggzom was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its initial position is x0 = -5 +hv6 oo ysp(m1meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initialo m+(sypv16h o velocity and acceleration, respectively, are

  04.38: A small point-like o/ 08pyy5zij,aw 3 s,hsgzob.qbject is pulled downwards by gravity (down the plane 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 amouagb .,p swy 8szo3h,05zjy/iqnt 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 loss of energy and that it takes negligible time.

  06.13: A rock is dropped fromn:f1hhtzw 5 7q the top of a tall tower. Half a second later another rock, twice as massive as the first, izt :wfnh 715hqs dropped. Ignoring air resistance,

  06.18: A cart is initially :cmt81ccj0,dc ju s*lmoving at 0.5 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 travel before cominml0cd tc sc:8,j1 u*jcg to rest?

  07.11: A cart is initially moving at 0.5 m/s alongi gr/zn1:a6o; xx+vzo;w2o ax 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 travel before ;:ori+2 ; v6o wxx x1/gznaoazcoming to rest?

  08.03: A dog starts lax+cok/e27m from rest and runs in a straight line with a constant accelerationl+oa/c27 xekm 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 initially at rest te; pj9+9i9a-5 pgkbrk ata7lmz g*8 ffalls without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a tim8p-te kgk+ztpi a5j a9 9lb am7r;f9*ge t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the r ))x 7c07b*dg0w,ofcnawbp pvight. 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 byw7 fcd )o7 bnwgvcx0p,a )p*0b Object 1?

  12.26: An object is thrownr3)3r;h c1lr5 mybers horizontally with speed 10.0 m/s from a height H above the ground. The object reaches the ground with a speed of 20.0 m/s. c)5bmhryr selrr3 ;13 Which 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 straig 3ylty;223s,vk5ghz u: bi;ct5 bgs)d ,bgz faht upward. The object remains in free fall until it returns to its initial launc2hbk2:gs5s;bzvu z5,fbi3yl , dtya g) ;tg3ch point. Which one of the following graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is dropped into freep;v ql8zw1i1 k8 j0:pqez:lnp fall. Through how many meters does the object fall during the first 3.0q zilk11l jep88 w:;pz:vpqn00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a 5(y-tux bt2,wu rdqy2flat surface in a time of 12.0 s. What was the initial speed of the box when iyudw 2rbx(q 5ut,-yt2t started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed ofb1+/om( x2c qops.219esuavl5 mq kqo 7.60 m/s in a time of 3.00 s. Through what dis b m(+c9 ma/qo1pqkos.v2251x lsoueqtance does the cart move in this time?

  14.16: A toy car initially mo+5m0zhnay 8 hoves to the right at 60.0 cm/s. Five seconds later, 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 of the average veloh0y oah+8 5nmzcity of the car during the five second motion?

  14.17: A toy car inir: f1k d 7*yugdjegaj (.ug6*atially moves to the right at 60.0 cm/s. Five seconds later, 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 of the average acceleration of the car durirgdj d:uej1gu** a6y.(7 ga fkng the five second motion?

  14.33: An object moves with constant acceleration starting with 2 y: l4r svhm7wzblxjs/.9nw elcl;; 6velocity $v_0 = 5.00\;m/s$ 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 in free fall. 2bt io,d;)cf ls;ijf :Which one of the following choices best represenf2ilo)jd i bc;,t s;f:ts the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trip by+vivtz;6a; jl n -+ga i u389-cjtelin two stages, I and II. The average speedivjaz i8 j 3gut6;lbt9 ya--+nce;v+l 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 of stage II?

  15.32: An object moving along a line completes a 20.0 second tri -s+/j:sl zugeg o8ln8p with an average:/ g ujlsg8enzso+l-8 speed of 10.0 m/s in two stages. 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 high4 v: 3oqxy 1w8dwalmu2r:7pzw cliff, a small rock 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 initw7avu:z48op:q wym3r wldx21ially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races w,v7 mceux26z z)mm bkmw51 iw4-dplp3 ith a robot. The robot acce )e wm2p ub1x6cmp,lvkzz 4miw357dm-lerates 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 positpfxq25 8 ad3teion 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 vertical position t eq a5p3dfxt28hat is one-half of the maximum height it obtains during its flight?