94.01: Starting from rest, object 1 falls freely for 4.0 chpa, )c6 zr63ioyetwx (5ry.seconds, and object 2 falls frrc5h x)a6yci.zp3e,ywr o (t6eely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest anr-y ,mc)trbjf:z y; t7d uniformly accelerates to a final speed of 20.0 ;y:j,7cbz tyfr-r)tmm/s in a time of 15.0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high clifjzlz m5 ;.sd -vrd kw1dp-:j obq+e4(of with no horizontal velocity. It lands 6.0 s later with a velocity of 40 m/sqjzd.odo w (+1 l zjr-s;vmd5-p 4b:ek. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the eartifu3 ujyg6 /uq,x 1ou2h is accelerating vertically upward a qu u23 ju16x,/ioufgyt $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found tj2njm3l1 d c :bws,oot/9ai j0o be moving downwards at 27 m/s at one instant. If it conimc9t 01 bds/23 , jl:ooanwjjtinues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and ac:lez 4)8i/,4mdfbe sl+onukicelerates 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 tf cj6oem.ta: 5t1 jdf;he top of a building strikes the ground with a speed of 30 m/s. Assume6 jefa m;5jcf1. :todt air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time,w6vd)-0zl x or an object in free fall has velocity 4.0 m/s in the upward direction. What is the approximate velocity of the object one s6o) dwxlvr-z0econd later?

  98.14: How long must w usu597 e4wz7euhu5wa $2.5\;m/s^2$ 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 movin.:cz0z k7u 9fz;5u 7zj jqktkbg downward at 18 m/s. If it continues to fall,bq.fk :zk0 u5j;k ut9cjz7 7zz two seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falm /83k 1s+klhyegqgj6;yn9 cn0p*i bqls freely for 4.00 s until reaching the ground. What was the hqyjkk+cl sn6g m pineby h01;*/398gqeight above the ground from which the object was released?

  11.06: A ball of mass =0.1/ lvji,)r1;yf5 agbqz00 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 of the following choices best represents the magnitude of the net force acting on the bq5 jg1/,ry)fa ;b vlziall?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched straigh,wgg5y/bp/(fj 2*yk+ xnada f t upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air /ag5fy,/(j dyfakwp* nx2bg+ resistance. Approximately how much time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding2v yb/ n10j2gyoi6:n5spljvetux 3f + down an inclined plane has speed 0.40 m/s two seconds aftep5 lovnf/e1j yjy0nu bsivx6 2gt +3:2r it begins 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 tower with a speed ug 0uaa8:)anboofq+1of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s)o0 anu+fo au8 :ab1qg 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 slu3. ytkt wgg* gbv.nl1x;0j7peed of another, how mul jy.g; lw xbk7g*3 tntg01.vuch higher will it be at its apex?

  02.30: A box falls to the ground from a deliverys;gvnt 6+wswf1 b jypq/b/4 ;t truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to co q +4st/1;;nfg/ tbvyjws6pbwme to rest?

  03.29: An object is thrown upwards with a velocity of 30 m85bc ypmhaj (5/s near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and amp55ajc 8by (hcceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown ver lf)200 ikj02+sgrcfjl /j goutically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from high 2 i)g0+2 j 0 jkrollu/jgcf0fsto low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are la opgk2q 9l,u h atkk7d*j+i)xiya-o93unched straight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 has mass 2M, whatliuq,tg9pkk ixa2+oo h7- d9j*ya k)3 is its maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball bounces on thoha(;8w comyox4r5t9pp 4 x+s2 j*gdie 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 8om2oc*jpos44ty ghra; iw +9( 5xdpx 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 laun nytuy- 0dllni2z3pz8jd, c,0 *r+bzsch, a projectile in free fall achieved its minimum speed durinji3,ryc2utn bsl8 0y ndzz, +lpz *0-dg flight. 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 high vertical cliff. Theyd2 jxb eu tfgsi)v v674.8gloms-.;x collision of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the vox2slb; .m.g f7x4u8 d6) -yvtjgeispebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking*a7*c o)he igp garage. One student suggested that to determine the height of the garage, they simply had to drop tennis ballph **ig7 oeca)s 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 xoz0(f. d /m6rsdfd-dmeters and it is moving away from the origin and slowing down. In(m0s./ xd d-f rdo6fzd 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 gy6- ulz0zwdpfu* s/ z*ravity (down the plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these -0*zu*pz z /dlsfwy6u 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 drok3ytm )-e- wt::minj ppped from the top of a tall tower. Half a second later another rock, twice as massive as theen)w-mi3- :t:t mp ykj first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s 1rh(/p 3gw3 qoxw,ti*qmm(uy along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now ht o3p(/qwygr wiu1* 3xq,( mmthe 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 cart comes9iwh;6 crixv+ to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart rx;i h9v+ciw6is 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 al e4t1:1zcc73akv er o:f 5mzw constant acceleration vew z1to4cc3l5 z krf:7 e:am1of 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 falqf3v 0 w.6ihpzls 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 t 36fpi wqv.0zhime is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the rightl(;4k+xoocbpv 3 /5ld/e vcx t3dr )dj. 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 accelerpt(od3;5edccvob3l /x4r jk x/l+vd) ation 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.j3p.,zo wvfqj. i n-+r0 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 represents the time of the object’s flighq,.n.fzjvpw +ri j-3 ot to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in fr-x)zwu7b-n(gwwf/zq1 s 0 ca ree fall until it retu-w7 1w- csqnbwa 0 (zgu)frzx/rns 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 the obzztre9kobzi-;i v* p/w 3jesg243: zl ject fall during tjrzwvt 23zzgie 4/i-:l*oz b9pk3;sehe first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m toh;io (/ rj6 ).2icppjpjjgfk6 rest across a flat surface in a time of 12.0 s. What was the initial speed)irhjc6op (./; jfjij2 k6 pgp of the box when it started its slide?

  14.07: Starting from rest, a556i ;t1 xx xf6lrilpq cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does thexpxfq lt6i5 l 5;r16ix cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds/ug, ted+o ,ag later, the car is got d /g,+u,aemoving 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 velocity of the car during the five second motion?

  14.17: A toy car initially9v)yzv--, qv9mdt)jhdk geu - 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 during the five secoyv- vhujk m-q)z)tv 9,ddg-9end motion?

  14.33: An object moves with constanvn 0)7t)6 s zy) t(nvtygzjspvy5b+8;zl e .kit acceleration 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 movij8ii - 8 vm+s:vrqkn/mipq,*t7tn h5yng upward while in free fall. Which one of the following choices best represents the direction of then -iris*h +vq, iv:n88kmpt qjt /5m7y object’s acceleration during its flight?

  13.26: An object moving only to the right com. nsbc7l6bdu il.0 3m fz/gec1pletes 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 cb 3msl0nb61u e czf/lg .di.7I, 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 sf1- 9h n79 crsizv8v zyfm7;zzecond trip with an average speed of 10.0 m/s in two stages. During stage 1, the object moves with a constantfzc rs-y 9imv87vz7 hz1;nfz 9 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 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small rock is dropped from rest. k 9:) +ut9j+maew ffdeA 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 r+9+:ewfm)u jaedkt 9fock?

  16.36: On a straight road, a self-driving car races with a robot. The rob/ksp(r/f8 q 8+)r gcke:1hqtc9 jtydhot accelerateek9+r/fct(81qj yphd )kgqt: 8hcr s/s 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 vertical positio4tfq/w:m npm ny1,n5fq2qb 7bn of the ball 0.70 s after release is the same as its vertical posy517:wmq 4f nb q ,/qbtnp2mnfition 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?