94.01: Starting from rest, object 1 falls freely for 4.0 sec7qlm3zjx)w,zz 7m ;pjl lb3 5t qk +z:tat60rlonds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 faj7:)z7lq,ql3 xl05 lrttw +p tbza kz6 ;m3zjmlls:

  94.02: A car starts from resy,el hdxmzv m6mmd i) (hr,30*g1:g qqt and uniformly accelerates to a final speed of 20.0 m/s in1gdr qmqd*vx,6 zl(eh30 g:ymm )ih,m a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horig6axi/e-vl81 ky bwx7zontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What wa /avlxkg6b78ei w- 1xys the initial velocity of the ball?

  95.27: A rocket near the surface o225.ikmc rs8waps zaj )q- i4rf the earth is accelerating vertically upward qas kia m2zr 28ijw-5 p.4rsc)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*lvg 8jt mi ykf6kn1i7n;i4 s; to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object wouldktknnj 1fy;ig6 ;i87 v*sml4 i be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerates at 7,1augv42i85tiwrm9ryx o3el9dqw j $0.80\;m/s^2$ 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 nveg n 5 xxj8o )b;yy/*)hucq/dropped from the top of a building strikes the ground with a speed of 30 m/s. Asgq8 yn bv/y;* 5 c/xox))hnjeusume air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, a-uba4ep2 oz o. )td u(vt6:xzwn object in free fall has velocity 4.0 m/s in the upward direct p2b: 6)zxwut4a.oe-o zutd(vion. What is the approximate velocity of the object one second later?

  98.14: How long must t1 ey pslwd(m0 1jd79ea $2.5\;m/s^2$ 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 mov4 x4xb-tio2(rgwuu.n ing downward at 18 m/s. If it continues to fall, two seconds later the obxr(44tunobgwx.u i2 -ject would be moving with a speed of

  17.02: A small object is relez1w hdln499fh-s5pa(jg0moznviocg0q3f 7/ ased from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which t m( gjzd1ni-fcg 35v4lwq9f9ao70hz 0pso hn/he object was released?

  11.06: A ball of mass =0.a0p:fenl87jap - :s tj100 kg is launched straight 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 sanpaf7 jep 8j-t:0:l 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 :d4 -dmmgtecd:q- vb:kg is launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how much :vmd :- qdgd-et:bc4m time does it take the ball to reach the maximum height from its launch?

  98.31: An object slidinq ,t0c6g1n mtt)e/z; t;unmhuh-m7bbg down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it teb gtm u)-hcuq,m1hn mt0zt;6t/;n b7ravel in three seconds?

  98.40: Coin I is thrown upwardcwr+j 5 94ei/s/wmom3ltz+,gbtskb) from the top of 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 latt /5e9, wtc+b+mwzkiom3/4rsj g )blser. 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 upwardse0z 4fe) 1k; /yak a1i*snrkuq with twice the initial speed of another, how much higher will it be at;/4r1fqu zn1e0i a )eky*skk a its apex?

  02.30: A box falls to the ground from a delivery truck travexi0sgytjnic85 le98 t,hy vc z-j7.h8ling at 30 m/s. After hitting the road, it slides 45 meters to rey 8jsi - xe9hcyt n.8j7z,gtl 8v5ch0ist. How long does it take the box to come to rest?

  03.29: An object is thrown upwarpcrr4;bu)mwy .3zb,c0+ kr y + odpxd(ds with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and acceler4+ bp0)curprd+m , (kyzb d.y;rcxwo 3ation?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m&8 x1p+*k os9 cmr q)9xtt;ngju 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectg t+s8oxutmqk 9c p1x;r*)nj9ively). 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 o.cawq+vev9 :.xgn ez/9y/u jlaunched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If oow.au/ ./+9qz: xvnvc9jee ygbject 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 x,oxcg hc(r3 6tfh ,t, k+gt+sthe ground as shown. After each bounce, the ball reaches onexogt s3xcct +,k6+fgt,r ,hh( -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 bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved its minimw*j h0*;vvb *z8 txdezum speed during flight.vt h*;wzvje 8b*x*d0 z If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a highim;s *z9z0iqxm c3bb . vertical cliff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With w9m 0czbsbm;.*zq3i x ihat speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing abo;)a zt9i i6:ygvgeu- yut the height of a parking garage. One student 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 was 1.4 seconds, approximately how tall is the :a;g )gi6yie -y tuzv9parking garage?

  05.07: A snail is moving along a straight line cr34m2 l -iub3og p2(m3evale. Its initial position is x0 = -5 meters acma3eu2m(gv-4 rbl 32lpoie 3nd it is moving 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 pul,1cuq :m x/u/m 5bez s3)nclxkh7 dud*led 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 amount of time (T) necessary for the object to be released from rest at point A and travel to point B. Assume tha /uu m,dk)c :qsd3 mxl*7 cenzbh51xu/t in changing direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is dropped from the to x/x- sqhdwx ;+ya-fi3p of a tall tower. Half a second later another rock, twice as massive as -yswh;3xxi/ +-d qafxthe first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. T*my-:;j78ogqrqv we whe cart comes to rest after traveling 1 m. The experiment is repeated on the same trar;:yqveq8 gwm o jw7*-ck, 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/s along a track. The cpgf14ucgwcs(k5n ye -+ 7(ezrart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initially prn1s cczew-5g(k+ g 4u7e y(fmoving 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 constant z 8aoknnuxi gkc wt.qo ..3g10ad0: /hacceleration o1 ko. zg ..nhot/ga8kd:nx0a0 uiqc w3f 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 wum6cvod/y,2 dithout 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 redv dmc6/ ,u2yoquired to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to rp - 70- wxea,baec9zsthe right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice that of Objec wxb7ea-0-,ce9zsarp t 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 thrown horizontally with speed 10.0 m/s from a height( a9hbz5kxg.,;zellx8 opc7 z H above the7,xz o bec(5;az89gk. zh lpxl ground. The object reaches the ground with a speed of 20.0 m/s. 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 straight upward. The object remains in free fall untint ,h4zqlylj7- s9s- ol it returns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a func yh-zl4lj9ntss-, o7qtion of time during its flight?

  14.03: An object is dr;x*x( notk;jxopped into free fall. Through how many meters does the obj *jxxko;xn;( tect fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across ar fluy)x3 :-y1(gs-ybun2 ivy flat surface in a time of 12.0 s. What was the-1ruy3ux yigl ( -y:s)ny2fvb initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly y :a-;mdbc9emn+o2j gaccelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move92ano+ b ;-:cdjgmme y in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds latw gihq/0ky 7t,er, 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 re tqgh0,wyi /k7presents the magnitude of the average velocity of the car during the five second motion?

  14.17: A toy car initiaqj+nm1yui ;4 blly 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 dur; +bu1i ymnq4jing the five second motion?

  14.33: An object moves with constant acceler; 1y oy+ 5ctads)cu1scation 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 moving upwarqpm k(xm/py+8 d while in free fall. Which one of the following choicep /my(8+km pqxs 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 trip in two s a-ngwsdy+ rafgu (u25//4zxctages, 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 of2f/ca+ gayu5-(n4usx w dz/gr stage II?

  15.32: An object moving axj5p1vqbir u1 1q, co8long 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 have du,ocuvr b18j 151q qipxring the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small dq0yh/e 3k/dg,mkg ir,7ksw( 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 initially dropped rock, what is they(k,/i,0/ 3k mh7 s gwekdgdrq speed of the ball relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. Thetx v hkx8z229lswz;1y 7fjd9a robot accelerate2vts7 j29wx8;1hk da lyzx zf9s 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 verticacqxgef+n ool) ;)q6.3yfp8o ml 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 verticale.)8yf+)cx gpf6 ;qoqlo3n m o position that is one-half of the maximum height it obtains during its flight?