94.01: Starting from rest, object 1 fallk)3a7c i* 7mybbls6 jkp zo9z8s freely for 4.0 seconds, and object 2 falls freely for 8.0 seco79bo) zz6 jmb7ysk8cli*p k3ands. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerjb:572 cy plrbates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this time?cbb :jyr p7l52

  94.03: A ball is thrown off ates,vv,c +e2l high cliff with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial e+e,v, lvs2ct velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vertically.p5h vphmhr qav7z-9; upward at qma 9hzp hprv5.7h v;-$10\;m/s^2$. 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 27 mnxxy:)6u9 p:gp*h xzn/s at one instant. If it continues to fall, one second later the object wgyhx9zu n: )6x*np x:pould be moving with a downward velocity closest to:

  95.39: A car starts from rest andy(hbbwk3,o2yaqk 4 hd8m:m6 o accelerates 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 ,5vt:f b mnt. n(.hzc;gk:18scbt jwz the top of a building strikes the ground with a speed of 30 m/vtjb nt8,km :;(s.g zwc5hnfzt1: c .bs. Assume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an objec, gu(iahi rw., rx)aw(t in free fall has velocity 4.0 m/s in the upwa r,,)x.awri(iu( hga wrd direction. What is the approximate velocity of the object one second later?

  98.14: How long mustsfib5 tgrb4;t1 mr )p1 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 object is found to be moving downward at7/ rv2 ztuioye- po3y* 18 m/s. If it continues to f2yu*trioeyo 7 /-p3vzall, 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 ulo .dzv; 4 5pcvrbs:;antil reaching the ground. What ;a zr;pvl cbv:ds.5o4was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so thaipcj o8a 2t)j/; 6 ze 3mrbca/81pqcswt 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 on1 pczm8r)a/i/3tjjbqca8; sp2 c6o w ee 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 launched straight upward sopjnv,e:ed k q5y,+8/e( zphvx that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much t,,j8y(evkhvqp n+ /xp5ee: d zime does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed a60tn1 wodaw50.40 m/s two seconds after it beginw dtwo5 1aa0n6s to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m to.b 2u(sarw*lcc1t, q ewer with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s t b(c,wcl.*usareq 12later. 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 of ansux67k- qdq/rother, how much higher will iq 7-q s/k6durxt be at its apex?

  02.30: A box falls to the ground from a delivery truck th gk,0kx2p9 bwraveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take tbkw0pk29hgx , he box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s near the 6cp g4p-i /flld;*j)nn.rb.*cj krc zsurface of the earth. After two seconds what would be the direction ofn;bfl*jik -*z) nj l cgd p/rp4rcc6.. the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically uewe.a 7bci 0c-pward with different velocac7- 0.ciewe bities (1v, 2v& 3v respectively). The diagram indicates 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 launched straignioljz u)/2 /hj9sb/ kht upward with identical linear momentum. Object 1 has mass M and reachek/ bh)9j/iujons2l/z s 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 asa79pv7 jgd33 a oddq3j shown. 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 b vp7jddda9o3 33gq7 ajounce was 1 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved its mi ct0zuq9+ bblpxyexub5i 36 /9uqu.-vnimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angbb6/ x 0lu39y utbp5qcxivu+.z9uqe -le of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The li6x l/e -l-sb56ek,smep r*n collision of the pebble with the ground below is seen 1.50 secondmx*ll5b / -sps,6eke li rne6-s after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing abou,in /ujpjz lkwc7corf;9 7y /;t the height of a parking garage. One student suggested that to determine the height of the garage, they simply had torczj/f;w 7,/pci7 ;9jnk ylou drop tennis balls from 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 straight line. Its initial position is x0 = -5 rk, i9te9 sh-vbw0k2jmeters and it is m09sk2-jrh vt ekw,9bioving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity: xe ,kkhtgu2+ (down the plane of the page) but is constrained to eg u+eh2,tx k:kxactly 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 loss of energy and that it takes negligible time.

  06.13: A rock is dropped frotxzw v y(5ei: ;+nk7ndm the top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Igno+5vt(;kd x ezi7 :nnywring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart comes tpgr5,h )a7 n:vzm-wooo rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is igw-p5 voa r,:monz7)hnitially moving at 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is initially moving at 0.5 m/s along a track. The cart come: ,yabwc pxend:00 /gr0r-xhhs 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.r,:r gbcxn/ -h00wap:hexy 0 d How far does the cart travel before coming to rest?

  08.03: A dog starts from rest and ofd*s9vp0 b(kyhrn4ktw*o,. runs in a straight line with a constant accelerasfp rk y*nt,dk*v hb0(w4o.o9tion 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 resc -.tb dm nz i*x5qou)+c-k dq4m.xfr;t falls without air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a time t, how much time is qx .r-b mk + q4xtd.;zc*f5m)cinuo -drequired to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerat;ck(5zk j2gi8h y1lrce to the right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that of Object cy(i;kz1hc jl285 gkr 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 Object 1?

  12.26: An object is thrup:l /az q;5dpown 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. Which one p;q5 dlz: /aupof 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 objec7:s;x 7vyyk ust remains in free fall until it returns to its initial launch point. Which one of : xsvy7s7yu; kthe 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. Thet2c-kfbhr 4/ rough how many meters does the object fall during the2fhkceb/ -r 4t first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surfarty tudspsh :abb;r2 s*/ln 8:,hu:0dce in a time of 12.0 s. Whasbas ;,/2sunutr:08dhpl ydb :ht r:*t was the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of xs ogzo 57/-sz7.60 m/s in a time of 3.00 s. Through what distance does the cart move in to-sxos7g 5zz/his time?

  14.16: A toy car inittzmq2*p 6/bja d0 gp nw /fk:)2ciivm0bs18uhially 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 velocm10d2iv/20zh fg c 6m8/kb)*p tauqbipnj:sw ity of the car during the five second motion?

  14.17: A toy car initially moves to the right at 60.0 cm/s. Fi*qtmb 4k(dj zas r -3i-6efc:kve 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 during the five seconds:(dc-km4*ezk 36 tiaj - brfq motion?

  14.33: An object moves with constant acceleration starting with veln 91ev/2gi modok1t2qocity $v_0 = 5.00\;m/s$ 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 initialvf.ynv0l9*jh wl gai:u) j0c6ly is moving upward while in free fall. Which one of the following cjuv yvn)9aig0 :c*0h. l6ljf whoices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second tr4r: rx )r*qz7,qhtppjip in two stages, I and II. qj, : z*t)p 7hxqrrpr4The 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 of stage II?

  15.32: An object moving along a line completes a 20.0 secoa +d vj,.8ldlmnd trip with 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 the 8.0md j llda8+,v. seconds of stage 2?

  13.33: At the top of:m7b*3.eptad;d tnyv bd),z v a high 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 :v3)bty;bt.,v nez*mddd7 ap.0 m further than the initially dropped rock, what is the speed of the ball relative to the rock?

  16.36: On a straight rb jwu0w0v:bz 1 t75nxwoad, a self-driving car races with a robot. The robot accebuw0v5 z1w 0x:nwt7 bjlerates 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 upwj-e-37 n sog-wzwqdfa5 tgo*-ard. The vertical 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 vertical position j-zqn* -ow5go-ws ea tgd3f 7-that is one-half of the maximum height it obtains during its flight?