94.01: Starting from rest, object 1 falls freely ;i owjvd owy91n ,)zd0for 4.0 seconds, and object 2 falls freely fornyv, izod;w 0o9djw)1 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly acc.su+j z o3spaw x uw(+:5ppo7felerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the ca5s po+uo. 3p+z(usja: 7 fxwwpr travel during this time?

  94.03: A ball is thrown off a high cliff withw.rxhr6 y:.wn3oe 5oc8 ws/az no horizontal velocity. It lands 6.0 s lrny .w/oe6.chwoa 3 rxzs58w:ater with a velocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth )s 5z )a7pxy5 dl/ yplumj6h2fis accelerating vertically upward at 2 )d/ x7pyyuml65)fszjpal5h$10\;m/s^2$. 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 m/sut nx+v 6u s.scl+ e4cdam)of26qwf, / at one instant. If it continues to fall, one second later the object would c.t s+6f) ufu/mc6lsna4+,qdw eovx2 be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelerates at tyq2o 2:2mkkr $0.80\;m/s^2$ 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 droppednmgyp(p(j w b e5f7gk.7*cse(x:j o*x from the top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the b gw57 xxo j:n *jep.ky(*(7c( mfesbgpuilding is approximately:

  97.09: At a certain xarh m tx.tp(qsxx k1.2: ea.7time, an object in free fall has velocity 4.0 m/s in the upward direction. W7tqep( :a2.1t hrx.. xxkas mxhat is the approximate velocity of the object one second later?

  98.14: How long must adppqtpi0 j6 t/*cri(9j.d/y m $2.5\;m/s^2$ 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 x i. t.sebaft0)bs6 .lm/s. If it continues to fall, tw.e. ss06fb .iaxtlb t)o seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and falls fre.ha ikz 4ituba-i iy,7u7 i;gjb,5,arely for 4.00 s until reaching the ground. What was -ai,r hku,,7 4ibia at.b j7yi;z5gu ithe height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that2j4n z, dlnf. 3 urbym/ezu2,a it rises to a maximum height of 12.0 m above the launch point. Ignore air resistfue3/muz,nr4y2j dbn,z 2a.lance. When 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 + h03pw tczbevzjb((j y3ze05is launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air rb3v ( w hjt30ezzzp0bjyc+e 5(esistance. Approximately how much time 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 two seconds al.whx e8t pc4ji,qf4 ;fter it begins tolp4q.8xc j,th4;e iwf slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the n vvlb 6:rbsw:b5 e,,9cm 1ywztop of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the t6c venbvw9:rbsmw:,z,l5 b1 y ower 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 dip+ht9-+y4dxm zj(e y0 wr3jo prectly upwards with twice the initial speed of another, how mu -m xe pj zj(ohpw0dyy3+4tr+9ch higher will it be at its apex?

  02.30: A box falls to the ground from a deliverybhyxdo0e 0hpj -,*3cn truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to come to r yexdc*o- 3h00bj nph,est?

  03.29: An object is thrown upwards with a velocity of 30 m/s near the *yg:; k9f qf :oc+fkphsurface of the earth. After two seconds what would be the direction of the displacement, velocity and ah;fg*:q pfk ofy9k :+ccceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3r fw7kbae 3w*0i 27nvgm) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank frwb2f0nrig7 3e*wva 7k om high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upwarfw45xo p4uif4bg/ y6bd 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, what is its maximum attained height above the launch point w4/b6y4uxo5ipb g f 4fin terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bounhy2nkx6j y4 3kce, the ball reaches one-half the h x42nk3 ykjy6height 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 projects +f/hry o2w4 r(+yamcile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was thy4ra+2 +f cy(/smh wore projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a higj tnf 0f* unyo6d6lhra:p:z)/h vertical cliff. The collision of the pebble with the ground below is seenn)hfu ::lpay6jdz*/of06rn t 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguini6 mg 1eprf3eh97bx0ob;fx 4 cg about 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 t6 x bfirx9c07hfp43eoe1b g;mhe 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 is1q vl g(vfb,x3 x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial position, initial v3,gvl1qxf(v b elocity and acceleration, respectively, are

  04.38: A small point-like ou9bx56) ja .wm;wqa. g/hk bjrbject 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 shortest to longest in terms of the amount of time (T) necku)bw hjaq w;xra /96.gj5 mb.essary 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 the top of a tall tower. Half a seco d6 r(r0evrh6dnd later another rock, twice as (h dedrrv6r06 massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s jfl 9dm4 m;:aqz:az/o along a track. The cart comes to rest after traveling 1 m. Th: :z omaa4;qjf9 /dmzle 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/s acrjoettu /: 7q q t*quy421up;long a track. The cart comes to rest after traveling 1 m. The ex4 p1;eqcu q72qrt/:t u* juotyperiment 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?

  08.03: A dog starts from rest and runs invdyf9 yz j( kcs1dr6jkh.f (sk*r11 3f a straight line with a constant accelerahsr z d(c*s6v 13 ff.11r jkkjfky(dy9tion 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 rel 7xv+74oaenpq ee) m:sistance 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 ree4 7 mv lxqp)eeon+:7amaining distance of 0.5h?

  10.38: Two objects both mocvyfu*brfc w3mw 0t5 q3z65.eve 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 Obje * 3zc0refy.t5c3mw5fbqwu6v ct 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 f:l-zhbx- mn 6ciss79b rom a height H above the ground. The objec6 bs mbl:zn-c-i9x 7sht 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 obju m*knx)gt4e mrh.6c9 ect remains in free fall until it returns mkme )6hx.49u* ncrgtto 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 intozl 5+)8gr wjs im29ele free fall. Through how many meters does the object fall during the first 3.00 seconds+ ml5z)g9iew2js8 ler of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface l+jd05 c ./-0c6nqkzhfv vhhpin a time of 12.0 s. What was the initial speed of the box when ch lq6/.v fvnzdp+ c00hjhk 5-it started its slide?

  14.07: Starting from rest, a cart u b1w1g(dbg8 muniformly accelerates to a speed of 7.60 m/s in a time of ( ubgm1w bd18g3.00 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the rilyeaqw7 9,/eh ght at 60.0 cm/s. Five seconds later, the car is m9aqwyl e7h,e /oving 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 initially moves to the right at 60.0 c7qiwew r+;l/mm/s. Five seconds later, the car is moving at 40.0 cm/s to/ lm wwr7;+iqe 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 second motion?

  14.33: An object moves with constant acceleration starting wihilo;6snfuaf)9zr5 me:3 ( vrth 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 upwarm -5lsrp9 ba2jd while in free fall. Which one of the following choices best represents the direction of the objectbrpm s-9a5l 2j’s acceleration during its flight?

  13.26: An object moving only to the right completes a 20.0 second trk y 3t0grj(.elip in two stages, I and II. The average speed of the entire trip is 10.0 m/s y0tr.( egk3jl. 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 second trip with anf6 zzr/regspso ,x0o-1(w d2 a 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 12.0frr/ad2(6 p e, xsw0z gso1-zo 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 y-34j;u t;jxi yejj/a high cliff, a small rock is dropped from rest. A ball is launched straight downward with an initial speed of 36 m/sjau-j/ j;3;xe4t i yyj 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?

  16.36: On a straight road, a self-driving car races with a robot. Tv uy vaxf *)6a/l/;sgt( 3qoldhe robot accelerates a*lo (;g) l/v6/u s3xvtfayqadt $8.50\;m/s^2$ 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 position omzj al (m,d;l1f the ball 0.70 s after remlz1ldm ( aj;,lease is the same as its vertical position 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?