94.01: Starting from rest, object 1 faz q*y ;tgfboawi )a91l2;w:izlls freely for 4.0 seconds, and object 2 fallsl;t*zw ;1a a:iy izofb2 gwq)9 freely for 8.0 seconds. Compared to object 1, object 2 falls:

  94.02: A car starts from rest and uniformly accelerax.7qq8d8rh /us8 w h2pv/f jsstes to a final speed of 20.0 m/s in a time of 15.8s7sp xuh8.2 sr/vq/q jdw8hf 0 s. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with n01ra w- ;0n+z cvf5mzsdm.wnc o horizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial vm;0cnwd n50- 1za .v+mr zcwfselocity of the ball?

  95.27: A rocket near the surface of the ear2xurgdzmdu2h33( j w3th is accelerating vertically upward at 3hud3x(2rjg 23 m udwz$10\;m/s^2$. 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 w*uwf67l/p /t8pp f )9g /qr:iibfapcdownwards at 27 m/s at one instant. If it continues to fall, one second later thu6gpf ptrclf 9b/pwai) *q8i/ f/:pw 7e object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and acceleratn*+ykiw i+ro xur* ;;aes 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 strikkkr2rv s 8,xu1es the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height v,ur28s kr1xkof the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s in thelfs;4ytq:f+abh u30d/z1 gf r upward direction. What is the approximate velocity of the object one second latel+urb/qd g fs04f ha3 yf:z1;tr?

  98.14: How long must a jbf-r 6;drjx( q1r h9adc; mz:$2.5\;m/s^2$ 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 flok c f.a- moo(u:q8e- kg3p018 m/s. If it continues to fall, two seconds late-oo0l.k3:-co8ug fp (mfaqk er the object would be moving with a speed of

  17.02: A small object is released from rest and fa/d8(v b)bircklls freely for 4.00 s until reachi( )v/ c8dbkbring the ground. 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 risesn fu1g3w0pk 8c- g)gsv to a maximum height of 12.0 m above the launch point. Ignore air resistance. When the ball reaches its maximum heig -gnvu3) 8c0g1ws kgfpht, 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 stra*zbq96 -vc0ll60qvqj p;sprm ight upward so that it rises to a maximum heighvqrlc s00pl 6v bjpq9m*6-q;z t 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?

  98.31: An object sliding down an inclined plane has speed 0.viq+;3-/7d cf b; klurvykrq 740 m/s two seconds after it begins to slide. Approximately how far doesdi/3 v v7bfqk-yr;ru l7qk c+; it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower wl nuqza9/ *c2dith a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s later. Ass*/ua lndqzc 92ume 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 +;fe+1nncsj kfs -wk y7o.o9 finitial speed of another, how much hig-7wy n+ f+.; kffen1jss c9okoher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling a+m :l+biml*nx5im *oat 30 m/s. After hitting the road, it slides 45 meters to rest. om ma llii+m nbx5:*+*How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/0or)ff6b qrf/r+0x ek:9o r o-dlcb+ks near the surface of the earth. After two seconds what would be the direction of the displacement, velocity and af+ rork9k o)frr dq-l:/x fb06+eob c0cceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are thrown vct) c+ st.piz4za ) v(lic).seertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates th (s.svce.ic 4) )zpt)lazc+it e 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 identicadiid6v47k 1g8 h;dt rgl linear momentum. Object 1 has mass M and reaches a maximum height H above therg 76ght41v8i;id ddk 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 t:q(d a,* q4aoa7vgyk as shown. After each bounce, the ball reaches one-half the height of the bounce before it. If the time *k(qa y 74,gvqaoda:tthe 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 pro cn:7m4pwh:p3th jc*xjectile 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 launch from the hctn:hpxhc pjm7*w43 :orizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collisioq8kph; uj:y0hn of the pebble with the ground below is seen 1.50 seconds after the pebble is dropped. With what speed did the pebble hit the ground? Ignore air resistahqy: phju;08k nce.

  06.03: Three students were arguing about the height of a parking garage. One 0u eet i5((ce:qg9sqr student suggested that to detu5sq tr:eice09 gq(e(ermine 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 1.4 seconds, approximately how tall is the parking garage?

  05.07: A snail is moving along a straigo4(dbi0auek0 ht line. Its initial position is x0 = -5 meters an ioa 04duebk(0d it is moving away from the origin and slowing 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 bgu)9+p bh7 qduy 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) necessary for the object to be released from rest at point A and travel to point B. Assume that in changing p79dqu h+)bug direction that there is no loss of energy and that it takes negligible time.

  06.13: A rock is dropped fro5teoezb 2*16t. c l iuo)/xwdjm the top of a tall tower. Half a second later another rock, twice as massive as*edt bj u exzcwt/6lo2io5.1) the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. hh(jp tqcrt0m3*g ncs )c2).w The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, but now the cart is initiall hh(swmct2.p c) cg*r)0 qtj3ny 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 c ufx73k) tg6obyjb1p +omes to rest after traveling 1 m. The experk3+)px1tj buyf 7ob 6giment 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 in a straight line with a conx2smurh(ji q+w cp/wc5 t/dpv ho/ ,);stant acceleratio/2+qc5tp h iwo()rxvc, j ; /hw/dmsupn 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 agl4n8fpi;pkyb89l+ u.ic 0wg .h0czh t 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 much time is required to fall the remaining distance o .p.uk+chilgngy cli 0ph0fbz;8w984f 0.5h?

  10.38: Two objects both move and uniformly accelerate to p3tr oiw .o+:ythe 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 o3w:t .poyir+ 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 2lkhz 0x7j3:n ku ggl-from a height H above the ground. The object reaches the gro7 l: 0h2nklgzujxgk3- und 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. vh5 6f.(li em,lvfvc3The object remains in free fall until it returns to its initial launch poin v fv(c3vm .ell6h5fi,t. 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. Throu xv0 aug6g;, c i9 7u.f83enxjg0yywffgh how many meters does the object fall during the first 3.00 secondefw 8u agun;xggx c 070yv6f,.i3f 9jys of flight?

  15.02: A box uniformly slides 7.50 m tgqtrs:;4k m o8 v:,- m:zzhzibo rest across a flat surface in a time of 12.0 s. What was the initial speed of therz: :sq8bt,:ok4z vhmg ;i- zm box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.60 kn2. sk0bzz0)y. shx mm/s in a time of 3.00sz n.zh2x.ysb) 0kkm 0 s. Through what distance does the cart move in this time?

  14.16: A toy car initially moves to the right at k +qleboby6)0jf, j d6p m/d,l60.0 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 wh0mod b )qbl6 dey,/plf6,+jjk ere 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 ata:vr8c8 w7vvk 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 secow r8 7vavc:8vknd motion?

  14.33: An object moves with constant acceleration starting wi.p,g1c djh to9th 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 movinq/9 9:m6hwr .worgk;u :bxp rcg upward while in free fall. Which one of the following chmu:;w6rkh/ 9qr:p 9 gwcxor.boices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only toez 1rxw9 3w3j h8pgh3o the right completes 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 constant9o wgzpr3he381h3x wj acceleration must the object have during the 8.0 seconds of stage II?

  15.32: An object moving z6h;wpsju)w:l *lp:yju6t)j 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 ))pzthy pl 6uwus*jj:; :l6 wjto 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 fro uxj67f6 0gpd:sd4 czom rest. A ball is launched straight downward with an initial speed of 36 d476cup0fxgsj 6zod :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 rock?

  16.36: On a straight road, a self-driving car races with a r3);yil 2t zh:fa g h5kco;(buoobot. The robot accelerate bczohi)a gtolh k:; uy35f(2;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. Ts,za85t,7 vr g5e0.r(lsx4n rlk l hdzhe vertical position of the ball 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 that isz (l4570n xelr,grlr 5 svkz t,ds.a8h one-half of the maximum height it obtains during its flight?