94.01: Starting from rest, object 1 falls freely for 4.0 seconds, and object 2 f cq36wi riy:t 1/r jmxnvek556alls freely for 8.0 seconds. Compared to object 1, object 2 fitx35in / k16 rjmvy cr5w:e6qalls:

  94.02: A car starts from rest and uniformly accelert-t k,8awd ./8vv0fqeyv.fgdates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travel during this timetg8k/.v8f 0f .vew-dtadqvy ,?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It lawv(o 0d9dch a+nds 6.0 s later with a velocity of 40 m/s. What was the initial v90dv o dc+(hawelocity of the ball?

  95.27: A rocket near the v 2l y6fd + 2qbri.t, cz.ugnnsm0*7nbsurface of the earth is accelerating vertically upward v2 ..0t 7sncrfmz*nqn g ibb6lud+2 y,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 sk,q,zpwh)a,7v 5zt 6tw dfg+ to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be moving),a zdsh,7gp k qtt6wzw,+vf5 with a downward velocity closest to:

  95.39: A car starts from rcaw8l+0ycgox0s-((cgb l 5vaest and accelerates 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 1gfy) kjt.vq( ,elf3j the top of a building strikes the ground with a speed of 30 m/s. Assume air resis jel(, )fgvj1.q3yfkttance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in free fall hasl)5s1go;qqu h velocity 4.0 m/s in the upward direction. What is the approxim5)o 1usqqlgh;ate velocity of the object one second later?

  98.14: How long must a ;fbl1n das5tf t**p u;$2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling object is fovt-r 8lt)qj/n t*i:(os-h +fbxh0t gzund to be moving downward at 18 m/s. If it continues to fall, /ntr8jv:h) bq+(* s-- txtfilg zo0httwo seconds later the object would be moving with a speed of

  17.02: A small object is released from rest and fallr m-*n7-75emz u.ukxs h) nj86b hg0mveirru9s freely for 4.00 s until reaching the grex-n5- m 9eurj760n m)g b8h7*ru mvkizrsh.uound. What was the height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it riao+j6pgxet. -ses to a maximum height of 12.0 m above the launch point. Ignore air resistjpex-.to+ 6agance. 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 is launcheez2 clceelxx4*o0z;ext-x ui4w5 ycib8c;* .d straight upward so that 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 maximu-;.cc l0xuxzezbi 2;e o wt4 lxy*x*e4 5ice8cm height from its launch?

  98.31: An object sliding down an inclined plane has speeqnkm i3/51;:lpbg irpd 0.40 m/s two seconds after it begins to slide. Approximately how f 5 /m13r:kipgil b;pnqar does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with a spee5 up z*bsqh4*3z.c jd,fbek7u d of 15 m/s. Coin II is dropped (zero initial speed) from the top ofb,je d. cu *zq7sufpk5 h3b*4z 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 aau :d13-uzfithrown directly upwards with twice the initial speed of another, how much highe3dzi-1fau u:a r will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 y 0z( 4 mfgd-k2n3.9zthcvq8puplq+ cm/s. After hitting the road, it slides 45 meters to rest. How long does itn c9 tkpm4g8 q-hy zduzpv3.qc+ (l20f take the box to come to rest?

  03.29: An object is thrown upwards mtc b6 ,ro12 u743ifbs)ls vzpnzr3k /with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacement, vel7mspok2i)b4bz/1 tzrsvc6l,nr f3u 3 ocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of-yq+gwoo 9yhac2eo* q7yoy a- 2x)gijc0*h0 g different mass (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The dioaq9ghqig 2*oj wycca- +*ohyey0xg7yo2 ) -0 agram 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 launched straight upward with identical linear momz.0znkym 1,fhentum. 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 lan0mz z, kyf1.hunch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bounce, thb/khw,d 5; jqre ball reaches one-half the height of the bounce before it. If the time the ball was in the air between the fiqrj/kd ;whb,5 rst 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 projecc2.vqzo*l b6/ t+h ecy1r lz36j. cfoxtile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, whatj elfq.o/1cc bo+x6zy 2z*t3vr.ch6l was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cli()ok ws-r/iru3wgd a 7ff. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is3d)kgs/7r-r( wauwo i dropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students wef awwx+hq -.d)upoa1 -21jc /b2f+7mr exax qgre arguing 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 the fall of th+w qchb 2fwra11m .a7u2ex)f/--+qo x gpajd xe 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 posgb9dzqu17bp)q w.(a qition is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate system, the signs of the initial po9gd.q bpq1za )w(7 buqsition, initial velocity and acceleration, respectively, are

  04.38: A small point-like object is pulled downwards by gravity (dh )m- + u2tjuxs oq**puqf.3krauum(.own the plane of the page) but is constrained to exactly follow each of the frictionlessmh3uoxqs jka2+t*pu -(qurm)uu *.. f 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 tower. Half a second later :6ca5by4paex;oui z ,th9c a+another rock, twice as mas4iz;a,c+t : a9xcuboe y5ha6psive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The can;qw54aza yg 5z8o 9cgrt 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 before coming tgz5nco 9gz 5a8yaw 4;qo rest?

  07.11: A cart is initially moving -bb0;d u,xqjp,nyae5 at 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 initially moving at 1 m/s. How far does the cart travel before c,bbx,q50day- eju ;n poming to rest?

  08.03: A dog starts from rest and runs in a s op/2tglha2 ygh0rs3:traight line with a constant accelerationshgg2tp3a l20yh /or: 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 withors hdw,d4uz7+q r/ o*trr+sx8ut 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 distance of 0.5h?sqr* r z+dx8ro/dt+s,4 wh r7u

  10.38: Two objects bow5/.7k t3cvn otd r*fv95doim th move and uniformly accelerate to the right. At time t=0,the objects are at the same initial position. Object d35tftn9vi dk57vow omr/*.c 1 has initial speed twice that 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 speeufx61,1ql*a nx9vqz jd 10.0 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 flight t qfx 9j1x*,azv 6ulq1no the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in free fall un1lk qqjstqo9i8umpy2j + oa.d w 517:btil it returns to its initial launch point. W +t87o 1:qaq1j5l2si9kpm qjowyb.duhich 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 frg5.(p3))uxz-q7elb7u alwxs-ih bdy ee fall. Through how many meters does the object fall durin) u7u 5a.q(xxsp -wb by 7iezhl)dl3-gg the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface ing.d ad-t ezwr9 / rd2rog.3+qi a time of 12.0 s. What was the initial speed of the box w eag+2 z/.dd.q3o-9i trwgr rdhen it started its slide?

  14.07: Starting from rest, a cart unif6 -7hdam)w (vm;b bogpormly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does th) op (vh76bwd;ma mb-ge cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. ;n ;wc;mknj8zFive seconds later, the car is moving at 40.0 cm/s to the left. The to;c ;kwn ;m8nzjtal 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 cm/s. Fjo1,tg5 --leeso rr4od-.yk give 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 represenk d rg.-r-toy eg5ooels1,-4jts the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with constant acceleration startinf6/1jpep b-b dg 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 upware4ea.tx ac-y ge6 uj18d while in free fall. Which one of the following choices best represents the direction of the object’s acceleratioe-e uxat1j48g . ca6yen during its flight?

  13.26: An object moving only to the right completerdjhcp* )g5h8s 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 stageph8g hj)cd r5* II?

  15.32: An object movin,z/nf hjx5lop0,+nh kg along 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 during the 8.f 0k+/ohn 5jl,pn zx,h0 seconds of stage 2?

  13.33: At the top of a high cliff, a small ror+9arr x)to3e :,5 bd+ yplxif0vo3yqck 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 the speed of the ball rr qrx+9,y3+efx0i3rbl )tpd5v yoo a: elative to the rock?

  16.36: On a straight road, a self3p4t.5-q g15jvg0c oepjw zoz-driving car races with a robot. The robot accele t3v4g.oe1jppczqw50 o -zjg5rates 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 position o/y(ojj hdr ;-e4:xa owf the ball 0.70 s after release is the same as its vertical position 4.10 o (hda:y;x-wrjj4o /es 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?