94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and objec90 i,t ukhnx5bjj ynqj9x5xe)1,na 9jt 2 falls freely q59) bn1je,5j,txjjy uinkax h9n0x9for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a final speed of 2 o .c.l5qxef5r0.0 m/s in a time of 15.0 s. How far doescfo 55x .lq.re the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal vj(6gpt:4z8-hx p9g gekx5 w61zfqz y telocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial gy6wz4p t5tp6-8z: q(gj9fgxhxz k 1evelocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vtoj 7gkw+x0g-qy: sx) ertically upward aj7gxxgstqwk 0o y -+:)t $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is foundp8jpso b(;-l 4 p7v/zf4hqs b72phrqpzt-:ya to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be mqrfqp/a4ysjs(z;-hvb-tp7lb8 7 p 2 h4 pozp:oving with a downward velocity closest to:

  95.39: A car starts from rest and act: 1hn.8pw jpa 0gxl.acelerates 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 thc oi wv7:-;ma(lol;kge ground with a speed of 30 m/s. Assume air resistalo m:g lv(wo-7ci a;k;nce can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in77wxww+;zg )yoc*q x d free fall has velocity 4.0 m/s in the upward dir)w+ 7g 7*oz xcxwqd;wyection. What is the approximate velocity of the object one second later?

  98.14: How long must a4w*g3+pz yxo t $2.5\;m/s^2$ 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 at 18 b5; b/q1wb(,glictd q fc,4ir m/s. If it continues to fa d45 /iblwbibcg,1cqt(fq ;,rll, 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 until r;*, ypbuz( uex7ca-l d9geq.xeaching the ground. What was the auq,p.; lg-x cdzy9( *u exe7bheight above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upwar6(5jzca xgf;td 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 represents the magnitudex g ajt5;f6c(z 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 launch 7v,m9tukg, e:eql; mted straight upward so that it rises to a maximu,; 9mgq,t lkvmu7tee: m 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 its launch?

  98.31: An object sliding 0k ;5 v3(uvfkadrsd.ydown an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Apprv .k (frayk5 0d3s;vudoximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100d724 bs-b qqor-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 later. A2 srod4bb7- qqssume 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 spyw kwvljy4t7qm66xu2m) :p fo 8rj 4:peed of another, how much higher will it be at its apexkuf64yjmmp w lpow7tq8x)y 6r :2v:4 j?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/s. edrg( pe qq25/1 kg u),nrdpg)After hittin5e pgnd,prgqgrd2))/1(k e uqg the road, 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 a velocity of 30 m/s near the surfaif(tb. dp**r+xv lv an0e,jf/ce of the earth. After two seconds what would be the direction of the displacement, velocity and acceleration0v,pfbn(aejr+.vt /* ifd* lx?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& ko9fvqu fvd/vp4 t o6.- -)azz3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates d zp. -avtofv/zq- ufk ov94)6the 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 straight upward with identical l5xe dwz.k x6bo.ahd-pvi3te71q6u, xinear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2Mu6-e5ix6zpb a 3t1xd.vdeqx. ko h7,w, 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 boun.. d/t9ke d,.4x:(og fzazb bf3rmrvcce, the ball reaches one-half the height of the bounce before it. If the o.br9dk,/c.g rxtbm 4v:fe 3f z( .zdatime 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 project cny-b+pg w4u9/e. jmuile 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 thenc m w.uupy9gj+e/4b - horizontal?

  05.02: A pebble is dropped from a high verticfpur) r daz37o9.zi8aal cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is drr8zzdp9 3 u ).iarfo7aopped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students ww-vt0 bknx o.(k6 9gzmere arguing about the height of a parking garage. One student suggested that to determine the height of the garage, they.xbgzv (ktk n6-o09wm 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 was 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving along a straighfdp /m 3z/pk uvj*h7:,1z ghtet 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, initp uvh:13*tdzm/zh gpej k7,f/ial velocity and acceleration, respectively, are

  04.38: A small point-li7)1f)s in6 hn v.yzil5spho;lke object 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 s;o n)hs1 ii)l5y.slv6 phf7 znhortest 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 from tkg 1ttx+iosli+cb 928he top of a tall tower. Half a second later another rock, twice as massive as the first, is dropped. Iggik9soi 8ctt2 + x+l1bnoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s alo7 2es+fx*hh)4p5 4td fryz nsrng a track. The cart comes to rest after traveling 1 m. The zep7sdh+rfst)4 5fryx*n2 4h 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 coming to rest?

  07.11: A cart is initially moving at 0.5 m/5u5u 8j* b8z*dgfge yfs 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 uzuy*ged5 588*fgbjfbefore coming to rest?

  08.03: A dog starts from rest and runs in a s v)pn8dxe2 ;lntraight line with a constant acceleed8v pln;) n2xration 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 initial)j3.tx2-q /f qgx s j6xc:kw(snxnax v.6pah)ly at rest 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 required to fall the remaining distaxs-(xwgnxcaxx)sa).:q 2p6fntk3j6vq hj ./ nce of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right. At time t=0cnght3+l. *hh 7e4cbe ,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*e 3hh7 lcbg +.thcne4 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 thrown horizontally with speed 10.0 m/s from a height )7gxsrlcot..t4fcs 2 H above the ground. The object reaches the ground with a speed of 20.0 m/s. Which one of the following chos7r.)t4tfxl o .2gsccices 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 fr k-w.fljnm248woxex f 7y+y,ree fall until it returns to its initial launch point. Which one of the following grap7y4x f+n2ey8 orlw. kjfwm-x,hs 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 oy1p;j.q ao2lez1ky3k4 :hqwmany meters does the object fall during the first 3.00 seconds of fligheo ak lq1yyw.pk:o 3z;21jhq4 t?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a timeqf 1 qw8r9aq ;o h6qx 8lbni)aqxuq/x0w3ju7. of 12.0 s. What was the initial speed of the box when uxaxq.x;a/8i0fuw j3hqq7oq6 1 q n8blw9)r qit started its slide?

  14.07: Starting from rest,xft6/v5uve z5 a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through whatzux 5 v56efv/t distance does the cart move in this time?

  14.16: A toy car init- j-q,: ubsjs m-9sbe4mw9wb id8akz6ially 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:meb-d6i9 jk-q 9,4 smja8ub bswz-sw 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 p qdub gcdmke)t9m*(i*,.y .eseconds 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 fivkt(u e.iyc.gdqd)e* b *9pmm ,e second motion?

  14.33: An object moves with constant accelerati o5x22iki)c7y3y - g 8rg nmfs62rsxwton 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 init oyn-9grr z)a)ially is moving upward while in free fall. Which one of the following choices best represents the direction -zryo)gr9an)of the object’s acceleration during its flight?

  13.26: An object moving only to the ri4/ cks84x ofvpp9 db4obr/l 2ffz;,ekght 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 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 Ikf9 f4f ov4 edx;r8s4ck2z,/b/olb pp I?

  15.32: An object moving along a line completes a 20.0 second duf62hsw 3.w*ah1ezn- dma 74bc u-jwj/f6hatrip 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 71m6z63hfs afh-ch2badw .njuuaw -dw*j /4e must the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a smalln7 ;l-i9y/mdun 8m ilx 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 7im98xl/ inm-y; nuld. 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?

  16.36: On a straight road, a self-driving car races with a robowea5 x+,lot*st. The robot accelerates att5loeasw x *,+ $8.50\;m/s^2$ 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 upwatx /.-oznzk04we ,a zwuq2j/p rd. The vertical position of the ball 0.70 s after release is the same as its vertical positionz .k opua//w tx20 4j-qzwz,ne 4.10 s after its release. At what time is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?