94.01: Starting from rest,3q jtvb xff58-b/l:. qmpw9f p object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared .x 8f-9/5qpfm fl 3bqjb v:wtpto object 1, object 2 falls:

  94.02: A car starts from f k n-4(r73crs -.6myaowmh5dnk 1hs+w5gbuk rest and uniformly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. Howww(mgf6ar dyk m n3-.cks4+h5r75- o n shbuk1 far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no h/w)ya /xqr +jyorizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity ofwj ayyq/) /rx+ the ball?

  95.27: A rocket near the surface of t4r 7vs+ .n 8zzwh7zdhrhe earth is accelerating vertically upward a.z 7dw78 4 vz+rnhzhsrt $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body h8h.v.nz+ri4qeny5z gw -pz+;f bin -is found to be moving downwards at 27 m/s at one instant. If it continues to fall, oneiz hn.-w-.5;nhn zr + gv8b+p4iyfqze second later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and accelera.r v s3dz*c9vi756dyug 7d ffp ztxl+1tes 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 the7 rh6jh h2o;by 6lp+kp top of a building strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. Tbr hpkjhhol+;2py 676he height of the building is approximately:

  97.09: At a certain time, an object in free fall hvl/otb9d7t+m as velocity 4.0 m/s in the upward direction. What is the approximate velocity of the object otd /9lm7tov b+ne second later?

  98.14: How long must yb7v6w 9d4/gafbu be;a $2.5\;m/s^2$ 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 m/s. If it +f hapk,5u kugazk*+/ continues to fall, two seconds later the object u +/ghk5p aa,k+uzkf*would be moving with a speed of

  17.02: A small object is released from rest and fall 638d pbny f9gb/xha,ws freely for 4.00 s until reaching the ground. What was the height above the ground from which t9bx,n3p6 w8dgh fbay/ he object was released?

  11.06: A ball of mass =0.100 kg is launched straight upward so that it rc*b:jjxij8py /s v (0mgb q/1bises 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 f801s j(bib/j /gqmx:y*pj vcbollowing 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 uu(u2g s: 9pmgxufwd6gx,/dke1 /9q yi pward so that it rises to a maximum height of 12.0 m above the launch point. Ignore air resistance. Approximately how ( pxuweidu6gs9 g, ux g2d q/fyk/1:9mmuch time does it take the ball to reach the maximum height from its launch?

  98.31: An object sliding down an inclined plane has sp cek)r98 ehfj1k2t5k s.xhwn14p p6 j*3jjhyxeed 0.40 m/s two seconds after it begins to slide. Approximately how far 2936hwpjrnh j e8.y*ckk 1)1jfx4hxepj ts5 k does it travel in three seconds?

  98.40: Coin I is thrown upward ui ,/)yz za*wafrom the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) fr awi /u*az)y,zom 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 initial speed of ak.ww6wu 21cv3zn -yxanother, how much higher will it be at w 6wz1.-xacu23v wynk its apex?

  02.30: A box falls to the groujwuii nd77u0.nd from a delivery truck traveling at 30 m/s. After hitti7inudu7wi0 . jng the road, it slides 45 meters to rest. How long does it take the box to come to rest?

  03.29: An object is thrown upwards with a y 4i a50wc +;s4yvkzkutz )k3xvelocity of 30 m/s near the surface of the earth. Aftxy3ask kvzyzw4)ik 5+t;c4u0er two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass (1m, 2m& 3m) are throwi 3bixamx pz2toy;.b )p-.1c qn vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of each bz-)citbm.xay3q2i 1o px.; pstone. Rank from high to low the maximum height of each stone. Assume air resistance is negligible.

  10.25: Two point objects are launched strat5djm lu.9ez 2ight upward with identical linear momentum. Object 1 has mass M and reaches a maximum height H above the launch point. If object 2 mt l.euz5j92dhas mass 2M, what is its maximum attained height above the launch point in terms of H ?

  04.28: A rubber ball 9 6nqpes6e :;dzz0mcj bounces on the ground as shown. After each bounce, the ball reaches one-half the height of the bounce before it. If the timezzdsn6pje09qmc ;e:6 the 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 projectile in free fall achieved its miniia 8r3g+ k1v,7c/ c4q2 1hasqzikwyjbmum speed during flight. If that minimum speed3i1qcs4aj iyvwrb+zhg qk ,18kca2/7 was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped fromadjni61 ee v. (l,at6q a high vertical cliff. The collision of the pebble with thejve6ltd(a a n.i1,6eq ground 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 height of a parking garage. One l54hj .viqx7c student sugg.iq 4xj5h7 vclested 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 tall is the parking garage?

  05.07: A snail is moving alrln6vyq+3h7 song a straight line. Its initial position is x0 = -5 meters and it is+ysrh 6 3vl7qn 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 by gravity (down the plane 1je jtqt-bi-ppi*i6 )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 direction that there is no loss of energy and tibjq-p )-i*ttei 61j phat it takes negligible time.

  06.13: A rock is dropped from the top of a tall towei)1retz6 by9t mu,gw .e1v ga7r. Half a second later another rock, twie1.)gi aym9tb6e,wgzr 1vt 7 uce as massive as the first, is dropped. Ignoring air resistance,

  06.18: A cart is initially moving at 0.5 m/s along a track. The cart comes ta1)b;q)tb-nyuy*am 7h uu oe (o rest after traveling 1 m. The experiment is repeated on the same track, but now thuo utben;my(h )y1b7 q-*aua)e 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 at 0.5 m/s along a hrjt 8+tcv1*l,rejpwo x:+p5track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, bu+ pr 5*tx:ho1ljcp+we,trjv 8t 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 03wk61ku co k*m8zhj7;jvkqq a straight line with a constant acceleratio; k7mk8uq0j6ow hvzc3kqj *k 1n 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 with9 .n/ kcq;ad706tmepg7xkc emrn ;0xiout air resistance from a height h above the ground. If the ball falls the first distance 0.5h in a /x 7tn0m gd cr q.0eic;k7e6k;px an9mtime t, how much time is required to fall the remaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to thx38i z8rr8p ym +rkk+ge 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 ratio of the distance traveled inzkrykr i+x8p38g8 rm+ 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 from a hei7tc;teg.bu* j.2 ubdy ght H above the groun ebg* d t2t.y7jb.u;ucd. 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 to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object56:8 y6xd(lhsrxtpf x 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 function of time during its fls(:x rt65ypx6xldf8hight?

  14.03: An object is dropped into free fall. Through how many meters doesxul+t8: d pndcwn1.r1 the object fall during the first 3.00 secondsrw81pnnl 1ux.d+:d ct of flight?

  15.02: A box uniformly slides 7.50u drk8 r c-.w2c:q72w (tznhxj m to rest across a flat surface in a time of 12.0 s. What was the initial speed of thz w8.xqtrw 72r-jncdu 2ckh (:e box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates to a speed of 7.9uca*zxd ,s u xp:a/a.60 m/s in a time of 3.00 s. Through what distance does the cart move in pd:us*aaza .9xu,x c/ this time?

  14.16: A toy car initially moves to the right yi0 ou:qz// fiat 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 yoqu:z 0f//i iis 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. Five secolzgq +2w -ud+rnds 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 theq lzd2w++gr-u following choices best represents the magnitude of the average acceleration of the car during the five second motion?

  14.33: An object moves with cons ;3o pgeami*:ttant 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 whilwk/:zdfi w8,btik g1m/nt nrq9 6hi;.e in free fall. Which one of the following choices best represent8 tri 6/zfin9g qwm:,kb/d.hwtin1;ks the direction of the object’s acceleration during its flight?

  13.26: An object moving (u3;cwg 9 mzv wkk(uns72)dx*f yw0fbonly to 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 forn uzg (3b7kvd s*m wwwcfuyf9);0k(x2 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 sou rckde-+n3; ./xe h; bj2cxhecond 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 constc+ x3nouj;c.ekebxh /; 2-hrd ant 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 cliff8q f7g*x (qdw/8*meedt8 r p7q)asd ut, a small 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 fallen 28.0 m further than the initiall7a8/e frtg eqmdtd88qpds)(*wq x7u*y 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 eak 7i87l s5u8o etpu1a robot. The robot acceleral8opue e 8sk it57u71ates 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.x xf +.u0fbgl5d)rh1 .mtgh )h The vertical position of the ball 0.70 s after release is the same as its vertical position 4.10 s after its) 0x1..fguftlh hhr5d+ mgx) b 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?