94.01: Starting from r6 v.o2xl dwi9/fmh xa-est, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1axw2 .lidvhxf 6-9m /o, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to jgbw) aa;)amk(fh1 u8 a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travabag(mjkauw ;)18 ) fhel during this time?

  94.03: A ball is thrown off a high cliff w9i htatx li85yp gt0e5p6 y4:hith no horizontal velocity. It lands 6.0 s later wi055hh:p l tepi496gitxayt8yth a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of thpp ;f; q xaq(tsn;/wzlwv(;s3e earth is accelerating vertically upward 3;nsts vfza( ( p;pqww xl;q;/at $10\;m/s^2$. 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 2u6ws,s 0td(i fw)w),fnoc y8d7 m/s at one instant. Ifw d8cffso i,w( ,nd0)tu)swy6 it continues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from regfnvd 1619bfi st and 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 eu 0icz7f(5e jdropped from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored.iczfu(0ej7 e 5 The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in the u-hz,q-t-k gymfnfr0 9v3dp f0pwg-zpyhff-,f 0-d rnkvt3 9qm0ard direction. What is the approximate velocity of the object one second later?

  98.14: How long must e huydt76e9s3 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 jf(293ikg bqmep9x l6be moving downward at 18 m/s. If it continues to fall, two seconkq9xb9 6i3 gp2lj(m feds later the object would be moving with a speed of

  17.02: A small object is rel2d3f ga2t. bpqeased from rest and falls freely for 4.00 s until reaching the ground. What was the height above tq3fd2b2.ag t phe ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upwar kqq8291 wmg us3x*nbud so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. xm wu8*ugk bsq3nq 912When 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 launched straight upward so tzic7:h7s/ fl,q h uk1ghat it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much times:lf7hgu,k 7c/ qzih1 does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s t dh9n.k v.s sf/d45zmhwo seconds after it begins to slide. Approximately how far zns9 ddh vf/4.5. smhkdoes it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a6i4 wrw;/w-zz7c lb j.zjhu m) 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top lc h)bjzmwj47u;zww .zi/-6rof 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 of an.zjc ws..2pt*k l;hmdother, how much higher will it be at its ahl2m .spz .;ck*. wtjdpex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 )u1 +peabr8.n( xsryvm/s. After hitting the rabn y18suxv(ep+) rr.oad, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with d96x qdnvif 58a velocity of 30 m/s near the surface of the earth. After two se9d5f x8ivdqn 6conds 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 vertically t x4bd3p 9et:wk(fi:kupward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank fropt3f9xtwke::d4( bikm high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects a ris1i:c8i6euia a-/b2g mj1hre launched straight upward with identical linear moment1hra mia21:iu sc j8i-g6i /ebum. 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 point in terms of H ?

  04.28: A rubber ball bou9c4l1)f) miftso mb 8gnces on the ground as 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 bounce was 1 second, what would be the time between the second and third bounbm4 slcgoim)1 )8f t9fce?

  16.21: At 1.94 s after launch, a projectile in free fall achieve1-jh)t ei )p/nvb w,:t d9ffbcd its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launc bwh1fbnce,tj)p )/vf 9d-ti:h from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of th4 pw zxw+bn4iwn5/-hp e pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistan /+5 h4xzw 4iwnbppn-wce.

  06.03: Three students were arguing aboutra ,rzz ryg(m.*zwkv8 et0c/; the height of a parking garage. One student suggested that to determine the height of the garage, they simply had to drop tennis balls fr0c;z(z /vy tmk.rreaw8 gzr* ,om 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 suxda;66yz bx6 traight line. Its initial position is x0 = -5 meters and it is moving away from the origin a6zx6x6uy d ;abnd 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 (down thwv* f 75y3vq kth7p-v8sso1ebou bc.0e 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 amount of time (T) necessary for the object to be released from ru-*1qt vs5 v fk8.3s07voywbp ebcoh7 est 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. Half a second lvb;7wia.xr .w ater another rock, twice as massive as tr7xwi w;.abv .he first, is dropped. Ignoring air resistance,

  06.18: A cart is initially movin+q 0 n 7vq.qf*ksd-wwkurd7:xg 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 iniw7v . q:+ qu*0rkdnxqwks7-fdtially moving at 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is initially moving a qp:2t-x jtosa9r ,d,ct 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, ot pq29t -rx,:sdc,j abut now the 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 conyxg- l hz1;d ykqn:m*gjs+.)c zx0x.f stant acceleration gkzy1.d ; c+- my0f:x h.)nzsql xjxg*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 falls without air resistz o3i/fio qvly*1 )ab.ance from a height h above the ground. If yzi/o.3v1 q*l i)foabthe 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 mov i:huek+y .h/kif4oa; e and uniformly 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 Ty;u:hke4+ kf/aoi hi. , 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 thrown horizontally witqx k6;hwvfe b 4icvv zw*79 is:o3r7c2h 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. Whi 4z3f7qxs :v*v92vwh6iwc7 eci;rk o bch 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 strwcf y./e. d;hkaight upward. The object remains in free fall until it returns to its initial launch point. Which one of the followid/hcy.; wke. fng graphs could represent the velocity of the object as a function of time during its flight?

  14.03: An object is -qkwryy 2/s5wdropped into free fall. Through how many meters does the object fall during the first y-sr5wq/2y k w3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m t5up*ak g g/jp ece 1on)a7bhc4*3mh(wo rest across a flat surface in a time of 12.0 s. What was the initinapg*bwu )4(kmoe3cja7 gh1/hec*p 5al speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelunz j/ m13yw2 c,(iu0ljklh+rerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does 1ku(hlj0zw/3 lcm,j u +2ryi nthe cart move in this time?

  14.16: A toy car initially moves to the rg6 cr ec2h274.,8zse wka nny ltqsg/3ight 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 dure8lh s.nq c tkze7ycg3 n,26g4a /w2sring 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 rig8cc6d+a azp- f)t,k ntht at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total dt fap)8c 6-t+c zna,dkisplacement 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 second motion?

  14.33: An object moves with constant acceleration starting with vel/tc f+1enuos599p+ /v qg7 h7z1 5bzbo klbsinocity $v_0 = 5.00\;m/s$ 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 el ef92d/tgwc a3yv (/z)we4a moving upward while in free fall. Which one of the following choices best represents the direction of the object’s acceler/wee4 2e a9w/3vad y()g tzlcfation during its flight?

  13.26: An object movi ul- vbp 3.hr89op7ujmng only to the right completes a 20.0 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 8u3j9ovur-pl 7mhbp. 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 movin120 yrdt c*dym-pk 8xbg along a line completes a 20.0 second 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 havem 80by1 tdxyd*rk2p- c during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small rock is dropped from res8a pf)o0sb6nyu n88 qst. 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 the speed of the ball relative to the rock?nnpqsu afob8 y6s088)

  16.36: On a straight road, a self-driving cao zwb9 bs4ukv 4b6z6z+r races with a robot. The robot accelerok46w49z +buz bz6sv bates 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 1mjx:z.yo+1q m3jb:v+wn ho z. 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 positiono.m1m:qb3+yzzn:wxo1 v +hjj that is one-half of the maximum height it obtains during its flight?