94.01: Starting from rest, object 1 fa75wpx.4g9p bsp j-ed 71d tjtvlls freely for 4.0 seconds, and object 2 falls freely fp jdvw4p- t. 1dxb7j7g9teps5 or 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final spe2j)( kn z(usdted of 20.0 m/s in a time of 15.0 s. How far does the car travel during thisk) u(tsd2j z(n time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It lands 0o a3ib .ovs9 9.u.6cmyky xpc6.0 s l.s0m bv u9i9yo.ko 3cpay.6cx ater with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth jg93jx5f,hbft60,aj gsna, ,b nbjf7 is accelerating vertically upward at s9,b hg0xjj,b5,73n 6jjafb gfan,tf $10\;m/s^2$. 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 downwards at k 6z3l7ah)s hf2/n:vjphw f81mh /nxk27 m/s at one instant. If it continues to fall, one second later xmankjnh/wksfz/f hh3 8 72l6)v :h1 pthe object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and :brij zkx)f .-ce. vba8 vz:)vaccelerates 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 grou2 gcjg/, 4vqmvb)*v8r4yt tn p.mq q;hnd with a speed of 30 m2;vtggm/cr.t j yqq 48,bvv4hm* ) npq/s. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall has veloa7jr4f e ssh3ri-c/ /ecity 4.0 m/s in the upward direction. What is the approximate ahee3 4r /7sfirs -/cjvelocity of the object one second later?

  98.14: How long must 69r8agusml/u a $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling objecci wvm2uxnoe48- f;*ot is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving w4x*8c mnfw-oiv oe u;2ith a speed of

  17.02: A small object is released from rest 5jqqp10 xnhh,z :y*y+o8d sfcand falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object wyx,85hpn:q d0o*z +f sqj yc1has released?

  11.06: A ball of mass =0.100 kg is launched strai5;ze :;fkicq +q /0rd7xgo qz2,v frbdght 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 thk q7 ;griq2 ebx;zrdfv 0 zo+fdc:q,/5e 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 launched straight upward 39*xu3ttncz);e +ca8 mfeleh so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much time does it take the ball to reach the maximum height from itte38zne+ )tcheu3a mfc*;9 xl s launch?

  98.31: An object sliding dodka05eftde*ip dt, a2 ,1onm- wn an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three secoot0de 5*fdt-eia1 , , kn2apdmnds?

  98.40: Coin I is thrown upward from the top ofx mf ak4c*v50a.n6 zzy a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s la.xza0v* a6zm kn4cfy5ter. 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 twixs4+ ut.c,o7c jet7 oe7aaqq .nli9v5ce the initial speed of anotuev7j7ctnxaa qi5e q9 ..o st+4o, c7lher, how much higher will it be at its apex?

  02.30: A box falls to the ground fri mjc;0hrf *dv6b0aun* h52p iom a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to res52ivir mhujhb f0*;c*06d a npt. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a vsv.z-)j yo cgp/7 hst44s iiq;elocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity apgz4i4oh7 jv iy.)cq-s tss ;/nd acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thl +xra d lsh.a2tr-n6,rown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of ea-xtlhr lsr62, a d.n+ach stone. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are l8x ,bv(1qt tr qnd ob(yz)g8n)aunched straight upward with identical linear momentum. Objedz,br )yv1b( 8n8t)on xqtgq(ct 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 point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bouncd menjdzxf:4*sgtj5*1c6y; lz sx( ;c vqb6 i9e, the ball reaches one-half the height of the bounce before it. If the time the ball was in the air between the firsvdiz *t9(cxj;*;ge: cblfsq456 xs6mj1ynz dt and second bounce was 1 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after laune+( woq :3bdomch, a projectile in 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 horodwe:qo m3 b(+izontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of the peb zwh75irua4qyu t9 v*.ble with the ground below is seen 1.50 seconds after the pebble is dropped.* w.5 uqv79ri4yah tuz With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking gaw6xjfp80gpp u-rk 2+omt, . wjrage. One student suggested that to determine the height of the garage, they simply had to drop tennis balls fk w xpm.j0 to2+,pfr j8up6-gwrom the top 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 along a stfmgh6 p3p7j7a;jsh)aj4 m rkpcgdc .m7(y,;craight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowinp7cm;;)(3p dfa,sm p7 4gyjrhc7m .j6acjkhg g down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like 6d2sk 7pbzv g*1ao;fh 4+0cmb0ajdpdobject 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 amounb 6+a70sf vacpz2h bk ;m4dgoddjp 10*t 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 from the top of a tall tower. 4x:2lu(zy g/gdjhk lh*j1e7iHalf a second later another rock, twice as massive as the firg4g u* e:ylx2ik d(h1h/zlj 7jst, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along h0 liqpgdq16.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/sid. qg1qh6pl0 . How far does the cart travel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a tra8:o6 of lvyae9 -e2ssh2ncv/6d(pocc ck. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now theno9d sp8 c(e6sea 2o2f clovv6-/yc: h cart is initially 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 straight line with a constanm17n ) i9mjjmfpng .fdr- 6m(yqn2ha, t acceleration of mrq-9jh7g mpynf 6)a1j i(mn.ndf2,m2$.5\;m/s^2$. How much time does it take for the dog to run a distance of $10\;m$?

  10.29: A ball initially at rest falls with-rd2/lx z(yq lout air resistance from a height h aboqyl l(/-2 zdrxve the ground. If the ball falls the 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 uniform4scgwtfnvqf//fk4p-q(pf- tng 6 /l8 ly accelerate to 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 objecsvkft p (n/ntf- qgp4lfq8 -f w4cg6//ts is the same. What is the ratio of the distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizo v4l+)5ha8 wwdku-pc;+le gd kntally 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. Which one of the following choices best repru w dh5;-c+al4 p)edlgwv8k+ kesents 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 fallgh/wh4f f1f yxzk* 4d4 until it returff x/4 f4*ky d4ghhw1zns to its initial launch 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 free fall. Through how many meters does thou+5lyz +4z0hu u-h she object fall during t z-h uulzus0hho4y ++5he first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat su2qh*8e yp- ielrface in a time of 12.0 qe82phl-iy e*s. What was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerat 66 witty;qhx cn+:f,ves to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the6c nvyw ,6h+tiq;tfx: cart move in this time?

  14.16: A toy car initially moves to thelme 9;5nbckb/ n if(s9 right at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to fi5k ;cs9nb e/9l (nmbthe 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 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 u0b estx. st1+utbw9 )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 mt9e)w.1ssu tut+xb0b agnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant accehndj.ve.o68 wu 9t5evleration 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 hs:s779ru hvb moving upward while in free fall. Which one of the following choices best represents the direction of the r7sv7hhsu9 b: object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second tr4r1 sv6gc (ofnvp+z :tip 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 ct1+6:o4c vf(rv sn zgponstant 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 trip sv1mukw 6 ;l-swith an average 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 ls-u1k m6 wv;sthe 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small rock is droppiar*r.( )ntfi ed 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 fal.ri n*( ta)firlen 28.0 m further than the initially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. t7 v3 qxs)cq5l8l5fwzThe robot accelerates atxqlwfv c7 t 8l355s)zq $8.50\;m/s^2$ 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 position of the br br:q0f k,tqcys-k)7o5r8e yall 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 that is one-halfyy-0 st)8q cb kr orqerk7f,:5 of the maximum height it obtains during its flight?