94.01: Starting from rest, object 1 falls freely for 4.0 secon d+0,vzja xp;q/ d7fnbds, and object 2 fnfjb d;x/ 7q0 apd+v,zalls freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelee rbx5 -k+02 c-nwglu)vxnm. h,j(qt ri+pl 4lrates to a final speed of 20.0 m/s +)iq5e0c-+j rn .rk2wn4- tl, xv lmg(x bluphin 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 horizontal velocity. It lanlo0x wo*5/fhzds 6.0 s later with a veloc 0o /xzf5wl*hoity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the si fiko(k+u 1s,urface of the earth is accelerating vertically upward atk1o,s+f k(iu i $10\;m/s^2$. 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,v1h0bj p* ( ljjj.yph downwards at 27 m/s at one instant. If itjbpj1h(ypjh.l0 vj,* continues to fall, one second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and 3yn (5kx7us:b oh2 jwunsc0q 7accelerates 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 a9d*id( - a,a,owizrm)y yh3i top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approxim*,d,w )- a9imh(oadzaii y 3yrately:

  97.09: At a certain time, an object7n5lq*pk cwbw*i b8(ub5z j,g in free fall has velocity 4.0 m/s in the upward direction. W,*ku(nlq*ww bbi5j5 7 bz8cpghat is the approximate velocity of the object one second later?

  98.14: How long must a 26 ywh4dm.,pkss2 (o+uak r tnasz73l$2.5\;m/s^2$ 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 naroraab p25f(u8k*7m/s. If it continues to fall, two seconds later the ar8rn( 5apok27afub*object would be moving with a speed of

  17.02: A small object is released from rest and falq 4of/wrjuqbr 0 3w-0yls freely for 4.00 s until reaching the ground. What was j-w0 b/fq3qurywo04 r the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched str )n,+cu5/tuoj4 gkak haight 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 max j akunt/c5),ugh4o+kimum 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 xc1b- ufq4n:hthat it rises to a maximum 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?x4 1nbf:q h-cu

  98.31: An object slios1cg73 vgt m2 hcw(z0ding down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does7h2mvg wz0ct(1gc 3os it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a b 3(- iojyhu o*.8*ungglv n3kspeed of 15 m/s. Coin II is dropped (zero initialu3 gbu * h*ij8oyvk -l(.n3nog speed) from the top of 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 thq-la514 jkqu te initial speed of anot a1u4l5tj-kqqher, how much higher will it be at its apex?

  02.30: A box falls to the ground from a delivery trucdstd 3wkm;,)yi4l 3y ik traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to 4y ddi3)kt;i ,ls3 ywmcome to rest?

  03.29: An object is thrown upwav()v qwn)dqbe2kv8 1.sbkhw2 rds with a velocity of 30 m/s near the surface of the earth. hb.218k)q2vbwk wed)s( vnv qAfter two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different ma jxhl4q ,4ghuln+2n 1lcdj72nss (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each stone. Rank from hic41 qnh j2nnhjll4g7d,lx2+ugh to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched straight upward with identime.0qxc16b j scal linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object6sm1.x ejbqc0 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 the ground as shown. After e3hqj;h ldpa +3ach 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 thepq h3a h+jl;d3 second and third bounce?

  16.21: At 1.94 s after launch, a projectile inm(cixqco w /kjs6 vy9v4 3 /6ln1mimf9 free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initia1cm/ lmwyf nv(xo9m9 cj/3kvi64i qs 6l angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of b 1- d6vw2.3z,8sg/dlsxw9na ei z*zdhxfyo3 the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did6sdx1/8-afxyzlidwb. vgd,2n zs* 9zhw3oe 3 the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the height of a parking garage. One s pn .9 86c(srgm+hoytytudent 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 balr+.ys (96 npoctmgh8 yls. 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 initiab 3o kynb/., q,li0oatl position is x0 = -5 meters and it is moving away from the origin and slowing down. In th yan.okioq/,, 3tbl0bis coordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards bya 1zpqj( 7k0mnes:;yaw- -mj c gravity (down the plane of the page) but is cm0mk(1a jp ;z7ecj wsy:- na-qonstrained 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 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 t v)+ dfr 2ek(qfl9uep1ower. Half a second later another rock, twice as massive as the first, is droppl1e2u+)dvf(9 qpef kred. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cam.kk9bs /p8urdmv f3oa2i.u e:s6x -t rt comes to rest after traveling 1 m. The experiment is repeated on the same track, but not/3:ms osm6b .e 2xaru8f.d kvk9u-piw 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 j5t,v-+f e 9h-ptup wfat 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 initialff 5ute p9+,-pv-htw jly 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 conscn d:ypg2p)fs (hf22h8 p str0tant accelerationfp0y8tp2sh2hrc(np): g 2d sf 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 initiallyi 8 k4;tzub+gep wzm70 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 mui pgb0wme8 zzku7t4+; ch time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to thqvu cs )75 gd3af 4nqujqf9+c:e right. At time t=0,the objects are at the same initial position. Object 1 has initial speed twice thatg+quqjua9f fvq 75cn4c d3:s ) of Object 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 fro1m-r.e2(oodw xoha0 wm 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 flmx-ew2 roho .1(o0w daight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upw/x sni6ck7/4jm ua9l4gnu0 xmard. The object remains in free fall until6 ixgu k4s/m/ 7a0nm9jucn l4x it returns 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 dropp6 ;:pu v,hx d ryqmf-ibv77uq9ed into free fall. Through how many meters does the object fall during the first 3.00 seconds of flight:d r6ivxv -9 fbypu7u7,qq hm;?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface inaeaj qwbi/ )*gxnk:38 a time of 12.0 s. What was the initial speed of thgx3/a j:i)b naq*ewk 8e box when it started its slide?

  14.07: Starting from rest, a cart uninjc uo6/h v+m92rii6hformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does the ou 9jih6h2nm virc/+ 6cart move in this time?

  14.16: A toy car initially moves to the right at 60n9deaf8yyuo : :lqe3 0.0 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 velocity of teloyaye 9 :nf8dq:u3 0he car during the five second motion?

  14.17: A toy car initially moves to the right at 60is8m(, i (owfui-qbrzct-z,. .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 choicsqcz,bfwi ir.(ztiu 8--m ,o( es best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constan7y xr/hywjqa,n1nl i4sz-+l .t 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 moving upward while in free fal+4dvuxb (6nh adtmr:, l. Which one of the following choices best represents the direction6tbm:dv (a4 ,x n+hurd of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a z;/ +zac3hvc 9x:vajj 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:c; jax/z+ vc3azv9 jh the object have during the 8.0 seconds of stage II?

  15.32: An object moving along a line comple9r ltr w.ju0i8tes 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 u 8.il90wrrt jduring the 8.0 seconds of stage 2?

  13.33: At the top of a high cliff, a small rock is dropped from rest. z1 g.rfo ql5 j5e.jo.pA 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 furthej fjp ..q1zo5l.egr5o r 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 w3tzx lzw5:2 3g :alzlhith a robot. The robot acceler:3xz3lwl5 ha:g 2zltzates 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 launchedh u;qxkic:teo2.6b 5v d 31kwu vertically upward. The vertical position of the ball 0.70 s after release is the same as its vertiidu63ekcvohqt.uxbw15 :k2; cal 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?