94.01: Starting from rest, object 1 fall9iu2+flmy,7 z i0ol sos freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, obje uoy2zi ,li l97mfso+0ct 2 falls:

  94.02: A car starts from rest anp8gx slcni. * +/xjg*:vv /kjtd uniformly accelerates to a final speed of 20.0 m/s in a time ojgl*:jtkn .xvg+ i*p8sx / cv/f 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.j3wmp-) xrvd . It lands 6.0 s later with a velocityj m3pd.xvw) -r of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the eartu o/o(b k(vg3tyy5)g ,wbitg.h is accelerating vertically upward at k.bgv5(o (o )tbtwygg/ y,3u 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 fos nqr2uxik ;is30 *ez4und to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would bi43 n uqr;z2iesk0*sxe moving with a downward velocity closest to:

  95.39: A car starts from rest and aczki57ns82z g3w teuh .celerates 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 top of a building strikes the grouin./ta xu2v18l3k mal nd with a speed of 30 m/s. Assume am1ixl/a v3tu2akl.8 nir resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object inestud/po/p5qol8 7vy30 o;t g free fall has velocity 4.0 m/s in the upward direction. What is the app tey ovd/opot3; glsqu57 08p/roximate velocity of the object one second later?

  98.14: How long must 6pt gu-1+w hz*q as ci:+uzib6a $2.5\;m/s^2$ acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

  98.15: A freely falling 8rc(szl4g ff9ubm4(pmh2nq -object is found to be moving downward at 18 m/s. If it continues to fall, two seconds later the object would be moving with a9mn h2 rspfuzqm8 4bc-(lg4 f( speed of

  17.02: A small object is releaf(th j3age-t am419dk sed from rest and falls freely for 4.00 s until reaching the ground. What was the he3gjmh-( 9afdk4et 1at ight above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg l2hc/5e dp n9hlet +4kis 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 ofhtpcd 29n/k+e4e5l hl 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 tk+*n yp 6 rg*wk0utk yt6t3h2fhat 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 itwf *0ktt*n upk63yg6 2t+rhkys launch?

  98.31: An object sliding down an inclined plane has speed 0.40 m/s two secj8+bgx tqem lxn187 (yonds after it begins to slide. Approximately how far does it ty71n x+8gebm lq t8x(jravel in three seconds?

  98.40: Coin I is thrown upward fromg-+ql+h m8hmm the top of a 100-m tower with a speed of 15 m/s. Coin II is drolh8g-mq m++ hmpped (zero initial 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 tv898 qachiyt.3q-8c lv/r gpg wice the initial speed of another, how much highag-tql/8vg. iqvh9y 3r8c8pcer will it be at its apex?

  02.30: A box falls to the ground from a delivery truck ttt64cf.vdy .l raveling at 30 m/s. After hitting the.cft4.tdly v6 road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thro qevu5 s3b1v*ywn upwards 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 accelebsvv u5eq31y*ration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vertically upw5ijweefk+ z:4y i0jt g/q,qv/ ard with different velocitie+q jgvqzwe4k/ yjft0ei/i:5 ,s (1v, 2v& 3v respectively). 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 objec rfwb 0blk mi9t4w438vz8h;gmts are launched straight upward with identical linear momentum. Object 1 has mass M and reaches mwfb8z3w ghkim t 48r9;l4v 0ba maximum height H above the launch point. If object 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 each bounce, the hlj+hh) 06tv:f 4nd sjball 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 the seconnhvs6h dt:+40j f)l hjd and third bounce?

  16.21: At 1.94 s after launch, a*na+r8 ayqwd7-lut- ,ds 1zoz w:lvt7 projectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’s initial angle of launca-y1ro n,7u: wv zdat*td 8wsqlz7-l+h from the horizontal?

  05.02: A pebble is droppej- x2a:ku/egmy2 yw g4d from a high vertical cliff. The collision of the pebble with the gr-gy4juwxy 2a2k :g /meound below is seen 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 arguing about the t8 )ylk9eoa z/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)9 tal k/yo8ze.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving aye 4udwi:6-. i n3ucjvlong a straight line. Its initial position is x0 = -5 meters and it is moving away from the origin and slowd.ju :iv6cen4uw 3y-iing 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 pulled downwards by gravite/xu s mm3m+fmvvu:oj *b7)n9kk* x/ hy (down the plane of the page) but is constrained to exactly follow each of the frictionless pathways shown. Rank these three paths fm s+v*m 9mf7kj/u o vk:e/3)xhm*uxbnrom 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 af/8( sz tbrpjow) :ow2 tall tower. Half a second later another rock, twice as massive as the first, is dropped. Ignoring airwrwto)2j obf / (zp:s8 resistance,

  06.18: A cart is initially moving at 0.5 m/s along *:* 8 xx.dwznu)mdv kda 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 dzuxd* )d8mn.wk: x*vfar does the cart travel before coming to rest?

  07.11: A cart is initially movingc6(b0 -)pbkvnsr d es2 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 nv-2 d bpbs cks(r)ne60ow the cart is initially moving at 1 m/s. How far does the cart travel before coming to rest?

  08.03: A dog starts fr1vw*gr + -nz x.;ajowoom rest and runs in a straight line with a constant acceleratio v* jwgw1.za;oo +x-nrn 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 resistance from abg yp(c crc8ml0:02: jf v/ln;smgi0g 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 sp(yc8jngm l0cm0 lv/:crfg :;gib 02 0.5h?

  10.38: Two objects both move and uniformly accelse) -qq2nylvas e, m0x s:xs-(erate to the right. 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 acceleration of Object 2. After some time T, the velocity of the two objects is the same. What is the m )l xss-q 02 yvss,q-n(xea:eratio of the distance traveled in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally witrtbi 7p 1q1wz:+lxs1b h speed 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 reprqx 1rblz7bw1i :s+pt1esents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains goefqq1a 4 4s*+vh rmm3oh40g in free fall until it returns to ifo3 ra es4* o40 mg+m4hhgvq1qts 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. Thro 7jn.84 x sxwqxjk3 fg//cszt3ugh how many meters does the object fall during the first 3.00 seconds of/zx w n8 xjx/4css.jt 33qk7fg flight?

  15.02: A box uniformly slides 7.50 m ;ve tmq5(zllw(-gx c gtj71i0/jerk0to rest across a flat surface in a time of 12.0 s. What was e5cqlgx z(0ti017 k; (lj rte mvwj-g/the initial speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly agh5no 1sor8qss j5o.s0p4v(na2- kogccelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what dis g81a50v- j2ssrsh4osop( o5gnkq .ontance does the cart move in this time?

  14.16: A toy car initially moves to the righe. erf3)f3w2v c9zg7sjltco )t at 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The totc39 .r vw)fc 7flte2zgse3oj) al 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 moi v 6eaytyhv6c v(k0-1ves 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 besth v 1vv-aey(yi6c6 0tk represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves wc:n5 au;r-xe+s odqk0 ith constant 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 movinols2wye/ j.k1d e0:k zg upward while in free fall. Which one of the following choices best reprzl.e o:d/jk w0k12sy eesents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completer16m.jj- 3xcxg+d dj es a 20.0 second trip in two stages, I and II. The average speed of the entire trip i6-x 1j3r xe+j dm.cgdjs 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 stage II?

  15.32: An object moving along a line completes a 20.0 second trip wi3ac1gmdl qnc7, i* 6uyff2pe .th 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 second3 l, 7gym1fdc6afc.2ei*uqpns. 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 sma +ndt5 tpptftr8-k8-vll 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 faftd5 + -ttp8vrnk-t8 pllen 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,0dhz,wau fm a;;s.uos 1uj1xw7fb1p8 a self-driving car races with a robot. The robot accelerates uzjf0wb1s. haw;1a fs ;d,mxop u78u1at $8.50\;m/s^2$ 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 of the ia7vt lw8 : (8jh.shaw4tp1czball 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 vertical position hj7th.8z 1 va8 :4w(wtcipl asthat is one-half of the maximum height it obtains during its flight?