94.01: Starting from rest, object 1 falls n id1n,g3qo.u freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1, object 2 fao1n ,q i.u3dnglls:

  94.02: A car starts fro*vi zkd4b b,1ty7w6 opm rest and uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does th1t7k p,odv4 zwb*y6 ibe car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It landsmshw nl2g.7n,q3g r 4f1bwx+v 6.0 s later with a velocity of 4xnvsf g, b7+ 3gmnw1 hwq4l.2r0 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerat k;edah j3g0j5ing vertically upward at0de3; 5 jghjka $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely fall/3j ),ln xf6jmw6uww cing body is found to be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would be movingc njwf)j/lxwmu,3w6 6 with a downward velocity closest to:

  95.39: A car starts from rest and awgwiws2-n /( occelerates 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 buil:tn .k-c5cx a4zgd 8cuding strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. agk:.t nduc- 5c zcx84The height of the building is approximately:

  97.09: At a certain time, an object in free fall has velocity 4.0 m/s8 7cj a 2p: a7qgjqsz: f)gknqc6j8o3d in the upward direction. What is th: jqsg87:jko67zacqjcd2agpf3 8)n qe approximate velocity of the object one second later?

  98.14: How long must a j.+1 o oxirqyh:v9-xm $2.5\;m/s^2$ 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 berta-0.u d 8y/aln6pvf moving downward at 18 m/s. If it continues to fall, two seconds later the objenaa r/tv80-u.f y dp6lct would be moving with a speed of

  17.02: A small objecbu :otmq(q **w jzp1g4t is released from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground frq4 *w1 mguqobjt:p*z( om which the object was released?

  11.06: A ball of mass =0.100 kg is launc.;o4fp1bu9hmsv0dv ched 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 of the following choices best represents the magnitude of the net force acting on tv 4f mv.hdcp0s 9;obu1he ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kgxdwl7q, ,q ihl)10bp t is launched straight upward so that it rises to a maximum height of 12.0 m above the launch point. Ignore a7 td0w , qlxbph)l1i,qir 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 0.40 m/s two seci4t qmy9 gpsokn:zy(k0/8s9hou mzzked-( (8onds after it begins to slide. Approximately how far does it travel in three segyk:zmop((t ( 9hzmo0ke 4s/nu8qzis-y9 8k dconds?

  98.40: Coin I is thrown upward from the top of a 100-m tower with * gh,3p9b c*t/ rdwqqwa speed of 15 m/s. Coin II is dropped (zero initial spw*t*wqqb , rch9gp/3deed) 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 the initi.a;tnbqf 4)izrpo+n5 y6upa)2 7llqs1 f1mnval speed of another, how much higher will it be at its i4n;1 sffnrq2l+alt)yu nb1aq m) 7z5op6v p.apex?

  02.30: A box falls to the ground from a delive vbx8+isr 6gy4ry truck traveling at 30 m/s. After hitting the road, it slides 45 meters to restsvy8bx 4 r6gi+. How long does it take the box to come to rest?

  03.29: An object is thrown u5k0vj*08 lrkqc seut.pwards with a velocity of 30 m/s near the surface of the earth. After two seconds what would be the direction of the displacemenlk5*tc8 0q0erks uvj.t, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are9c8qv k dfd(r2tzj* q* thrown vertically upward with different velocities (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 dq 92jv8qc*df(z r *tkresistance is negligible.

  10.25: Two point objects are launched straight upward with identkqmx/ ig iv( i we/xc28a4d9ek9gz 85c5ser0bical 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 attai85izaqm b xse / 0erxci89g9kcid4eg/5v wk2(ned height above the launch point in terms of H ?

  04.28: A rubber ball bounces on the groundj(d ;y;n0sb(m-pmabut3r) an as shown. After each 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()yumbp3- (n aj s d;b0atnmr; the time between the second and third bounce?

  16.21: At 1.94 s after launch, a p*oif3qwvrt/six6 4nfrc, q - y5o(+ gk5vb*qsrojectile in free fall achieved its minimum speed during flight. If that minimum speed was 15.0 4 55xvsw*cqii6q 3 r*ntkb -r/f+ g f(,oqvsoym/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliffaq 6d3-9q p6 9grb.s enokh-os. The collision of the pebble with the ground below is seen 1.50 seconds after the pebble is b ds se 9-9q-oa63qh.6pr nogkdropped. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students were arguing about the heig-t,l6omqr fi. ht 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 1.4 seconds, approximately how r.m i,oqlf6-ttall is the parking garage?

  05.07: A snail is moving along a straight line. Its inx;c 7:f0yqd8jifgq6 q 0 igr*aitial position is 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 velocity and acc q0gxc:dgfy706a * i;qjqfr i8eleration, respectively, are

  04.38: A small point-like object is pef*,d6kp2 5, nhnrqbq e*8se fd/9rnjulled 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) necessary for the object to be released from rest at point A and trav r*en8d ph*bj6/qr2,fke9q,snf e 5dnel 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 droppu3ee *n:ibx3ued from the top of a tall tower. Half a second later another rock, twice as massive biu3en ex:3u *as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s aloyhpex6s6uuj)7p4/bbi*k8 sb g8rj4 tng 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 abk j/ug ry8je4h4su6sxi*t p87pb6b ) t 1 m/s. How far does the cart travel before coming to rest?

  07.11: A cart is init s6sj5r) ndg*fially moving at 0.5 m/s along a track. The cart comes to rest65fjgrds*)sn 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 to rest?

  08.03: A dog starts s)g7 bx ;awe7xfrom rest and runs in a straight line with a constant acceleration ofa7 )g;w7x sxbe 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 a height h abiw2rf2w1 :a-6xx.nr h jx+zo6 (flhabove the ground. If the ball falls t1 xa+ r bxw2o.xizalf:6w f6( j2-hnhrhe first distance 0.5h in a time t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accellp4v8;op 9y e vcuht;dl9b 1t5erate 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 samel 1vu5 dpl yt;bovh4 9tpc89;e. 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/s40h sb1wtwfk/yxyo3. r i is:t3ji6n0 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 fli3xty6 /f rywo h 3ii0ijn: t1sswbk.40ght to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The6lhpu:vt -t+jr 1p 5 vis .3kvauzo90h object remains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the velocity of the object as a p3u-t. ivvat+kr6o:h p19h5 sjzlv0 ufunction of time during its flight?

  14.03: An object is dropped into free fall. yc,8s0g+x hxi;g+on cpw2j2p1ta x 5 uThrough how many meters does the object fall i0xx 2cxjytpgcu1,8;sogp5w n a2+ h+during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest acrosjbz)wn: . w0x0mgg.(0 bwctras a flat surface in a time of 12.0 s. What was the initial speed of the box when it started its slide?)wm agb.w(w:0 c0zjrg. tn0xb

  14.07: Starting from rest, a cart uniformly accelerates to a sp2ry zl) 0;fjk1cy,mrweed of 7.60 m/s in a time of 3.00 s. Through what distance does the cart move in thic r02y,k m; jwz1)lyrfs time?

  14.16: A toy car iniw 0qrhpkr4h dd10p)zi4 i/bjecc46h7) 6ohn dtially moves 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 duringi0/ j pc44q)h 06n pho1e rdz6i7dhcdhrwbk)4 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 l0rzq4y*q; 7h9yqdg9yb6rypq 28ttn 60.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to the left. The total dis 2yyzq 68btrh9qld ;90qgyqpn tr7y*4placement 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 col4dl9h -5jeu18co8d0 tle u ejnstant 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 fall. Wh,9ng cnesj() zcv -r*lich one of the follow*ce-r)c v(zlg9nj, nsing choices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to the right completes a 2-iqd;h zamx2fepu7 9m/q9k(d0.0 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 constanm9 zpmi9e;hu qkdx-q2(f7da/t 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 wzo(9)jxpq e0 v9l7kpf0 w- oksith 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 th0kpqvoz7-l e k pow0 js9()9fxe right for 12.0 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 high cliff, a small rock is dr pbt,-jt4,ze)6cv ,kop. .df vl *fdkvopped from rest. A ball is launched straight downward with an initial speed of 36 m/s at a time 2.10 s af kove d6f*.,b , ,v4tjd)pzk.ctf lv-pter 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 ro).vo/uxqpfu1x )j+kr bot. The robot accelevq .op+ u1)/xxkurf )jrates 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++fleg,2 w3ltim: j/i j4gqjo upward. The vertical position of the ball 0.70 s after release is the same as its verticamg j4q+i 3/gfli:2eowtljj+ ,l 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?