94.01: Starting from rest, objec( -:w 4h3 vb.dxjyqjnbt 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared tb yxvjjwd qn4b.-:3h(o object 1, object 2 falls:

  94.02: A car starts from rest and unifox-zj 1f-5bri dqnuj z w4j5h78rmly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far x--qizw 8j 4rjnz57uj5d1fhb does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no hn.,ybo z b*gzm(8 bes9orizontal velocity. It lands 6.0 s later with a velocity of 40 m/s. What was the initial velocity ofb, .mbnbygz8*9o z( es the ball?

  95.27: A rocket near the surface of the earth is accelerating ve;,3ch g2ryq7y-e* rsg ynre 0krtically upward qc-7g ,ryrhyn g3y20rs *e ;ekat $10\;m/s^2$. 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 mov xk.ca;jzy nb xy.9qbbi s,5rz6 xk7(:ing downwards at 27 m/s at one instant. If it continues to fall, one seconkbc5;k xx6 9yznirbyqz j,bx:(..sa7 d later the object would be moving with a downward velocity closest to:

  95.39: A car starts frf)- z:h;eg3w-ojz jqv om rest 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 the top of a building strike+9+u ylt k ikz w0yr8z*2dkakq7p2d2r s the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building8k rdu2l q d2k*pytkz0 7+kiyr92aw +z is approximately:

  97.09: At a certain time, an object in free fall has ugbe t:1+if1l zob-j:kp 5r -bvelocity 4.0 m/s in the upward direction. What is the approximate velocity orio zgjb :1:b5l- e-pktf1b u+f the object one second later?

  98.14: How long must a1,agni+ojc+.-g uknjjlfjy h l* 3m)) $2.5\;m/s^2$ 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 dom- jccts74 s5ewnward at 18 m/s. If it continues to fall, two seconds later the object would be moving 5c jcsm-se74 twith a speed of

  17.02: A small object is released from rest and falls freely for 4.00ud dh* -i( u/p.k2gl70cpwmnj s until reaching the ground. What was the height above the groh- 7d d( nm/pj*p.wi2g0luuk cund from which the object was released?

  11.06: A ball of mass =0.100 kg is 3/i rg;)0+uzl )qcie0p eyj cklaunched 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 magl;y/ig)ie kp0+ 0)cr 3qzecujnitude 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 thgfny-u,m r)8ct o r5urgd;+ 7pat it rises to a maximum height of 12.0 m above the launch point. Igno5,yom)fng- 8drgt;c7ru r+pure 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 0.40 m/s two se:8h3yuc6qzxnc f v.r:conds after it begins to sli38ryqhc.: n u:6 xfzvcde. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upward from the top of a 100-m 7dzqlt6,2yvvml8hbj( kpsb/y)si3f9p p +/ n tower with a speed of 15 m/s ypvk2vlpjmptd9zq+yhbi,3f()/ b78n6 s l/ s. Coin II is dropped (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 wicc wwm w gssuj b/)h:4.8vra,9 xwa)f:th twice the initial speed of another, how gws u))9sh/j xr ,fca48.w: wavm w:cbmuch higher will it be at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/s. Afolz*ye /it3k o*w s.m5ter hitting.tmz yel osk/ *35iwo* 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 velocity of 30 m/s near the surface 7zb73wi4r8:5 uvcpw*nr 5 : imjcj,iu mc:bhw of the earth. After two seconds what would be the direction of the displacement, velocity an5mihicmw:3w: *b:7urv 4j8wrp,z b n5ji7 ccud acceleration?
displacement velocity acceleration

  04.10: Three stones o o5( 2 nddcwp pifb)f5joj5/u6f different mass (1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates t )wcjni55op udf2d6jp/b( 5fo he 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 na32utr c b3,dupward with identical 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 attained height above the laun2 dtarn ,3b3cuch point in terms of H ?

  04.28: A rubber ball rw 7o ; rf.zc69,tmb6 x,ghcsdbounces on the ground 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 firstgh9ror7wdcb;z , m.6 x6tsfc , and second bounce was 1 second, what would be the time between the second and third bounce?

  16.21: At 1.94 s after 3y *o(jc c 5egdpfxy,6/y7ckylaunch, a projectile in free fall achieved its minimum speed during flight. If that minimum speef5 yje*(3,y pgxy/d7cc 6cy kod was 15.0 m/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is dropped from a high vertical cliff. The collision of ty:tt53:t2j5 dkk bwyx he pebble with the ground below is seen 1.50 seconds after the pebble is droppet:t5wtbkyy k3 xj 25:dd. With what speed did the pebble hit the ground? Ignore air resistance.

  06.03: Three students ;i9v d ly7o3i8o 0iohowere 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 the tennis balls. If the time for the ball to fall was 1.4 seconds, approxio o0ldiy9i8 vo;o7i3 hmately how tall is the parking garage?

  05.07: A snail is moving along a straight line. Its (g j5zxz:.rabjvs ,u *initial position is x0 = -5 meters and it is moving away from the origin and slowing down. In this coordinate syste(jj,5.v* rg:suzaxb zm, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like objectcj2upxn; 2n+o is pulled downwards by gravity (down the plane of the pag unj2p x2no;+ce) 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 that it takes negligible time.

  06.13: A rock is dropped from the top of a tall tower. Half a second l)lmm rhjkwe)*f43ui1y9 v es6ater another rock, twice as massive as the first, is droe)hi3f6*l u) sykmjme1 vw4r9pped. Ignoring air resistance,

  06.18: A cart is initially)dqgk/) gtmt5; fim1r moving 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 i m1;d t5/)r )mgqfkgtis 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 ak9 +:eu kswixkum /uw9 1f9fr/ track. The cart comes to rest after traveling 1 m. The experiment is repeated on the same track, butf mx9/ 1ukswi9kk :ru+uf 9w/e 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 consiy(a7 b8cas7gbvel);tant accelerataesb)c8a v;lb7yg (7i ion 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 resistqla 88qpc 0ag7ance 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 d70caqpgl qa8 8istance of 0.5h?

  10.38: Two objects both move and uniformly acceler bz73bq.o,vbj ate 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-halzbq7jv .ob, 3bf 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 horizontals7ryto: d+jp9ly with 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 b+ js79:dyportest represents the time of the object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The u(a: m j2y-ed8dkngf 2object remains in free fall until it returns to its initiadf8 a-n 22y:kdue m(jgl 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. Through hjyioe y8lj7 ,wqzc1 (.ntl5 +hfv f)i3ow many meters does the object fall during the first 3.0tjqyf, jl) 8hol7iyz c5ewi1fnv (+3.0 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest acros od c3o)9sud0k(oim( rs a flat surface in a time of 12.0 s. What was the initial speed of the box when it started itsoo3u(sd d ik c(9m)ro0 slide?

  14.07: Starting from rest, f)/t3: nad9 aiex52 ve)w tfyea cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what dit exydi)f9:t)v2nweea5 af/ 3stance does the cart move in this time?

  14.16: A toy car initi3m 2 c:7lqblbsally 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 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 3bq 2bc 7llsm:five second motion?

  14.17: A toy car initially moves to the yep 2,hat .c(pnl8ymi5 qw8 l8right 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 best represents the magnitude of the average acceleration of the car d y.ecy88llqm pw(an2, 5p8 hituring the five second motion?

  14.33: An object moves with const wfv2:8-9x.(ak bjj d 8 rv,jayd4xszxant 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 falla,. n* s7zjv z-c4uzih. Which one of the following choices best represents the direction of the objec.z zha ,nj-uivzc7 4s*t’s acceleration during its flight?

  13.26: An object moving only to the d4tim fd0oh): 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 seo4d i mftd)0h:conds. 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 0) ypqs c wy4b*hwdg+x *0hxh (m9/ttd20.0 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 * 0whsm9(g ytp d+hxw)t4d*qh xc0y/bmust the object have during the 8.0 seconds of stage 2?

  13.33: At the top of a highmk9wr61i* d wrnimwa(cq6:3jq 3jr7c cliff, a small rock is dropped from rest. A ball is launched straight downward with an initial speed ofd*(jir6 i:r6m c rww9awjk13m q3q7nc 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 relative to the rock?

  16.36: On a straight road, a self-driving car races with a robot. The robot acchk k,fkvd5.cbr3 6ec 9elerates at kcd, hkfk5c .v69 3ebr$8.50\;m/s^2$ 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 /edc 1a.4hc /06k05tyvg.gnfpzz ut b 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 is one-half of the maximum hehdcaz/6/ 1g vpgc.kye t4un0. 5ztb0fight it obtains during its flight?