94.01: Starting from res6o 6wl ap9h)*7 qbf domlwi;4yt, object 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to oofl9w4*ob;a6 6 mdhi) ypw7lqbject 1, object 2 falls:

  94.02: A car starts from rest and unifor7-x.bq+k 1 n9hxlydzt mly accelerates to a final speed of 20.0 m/s in a time of 15.0 s. How far does the car travebtdkzhql+x1n 7.9xy -l during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. Its o5 m0210j9ov:;orva yp kzic lands 6.0 s later with a velocity of 40 m/s. What was the ini2koap0mo y o0v9 rciv5zjs;:1 tial velocity of the ball?

  95.27: A rocket near the surface of the earth is accelerating vhto2 c bbdb dy0h 9 1bb0;thcj+9t*vs3ertically upward ab3hv1h9h2 9c tcj+ sody*; b0bbb0tdtt $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found v 9v) 0dpjmv(sto be moving downwards at 27 m/s at one instant. If it continues to fall, one )0vd 9vpsv(jmsecond later the object would be moving with a downward velocity closest to:

  95.39: A car starts from rest and au7(qs7nj ps yspu,z2f 99iq 1sccelerates 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 t xj 9b+-gfnk(6abj l.bop of a building strikes the ground with a speed of 30 m/s. Assume nxjl6 bbfjga.k-+ b (9air resistance can be ignored. The height of the building is approximately:

  97.09: At a certain time, an object in ) 6p9(mbjg,tuhzykg xs1dr0oo 1r)g 2free fall has velocity 4.0 m/s in the upward direction. What is the a g)(oom1x2)g9h 1r,k djtur6 bgp s0zypproximate velocity of the object one second later?

  98.14: How long must a w8suidw*4shb. ilu v6 +p5s/d$2.5\;m/s^2$ 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.oui /1no. g3f. l*rjpvt m(t;yab/*ed If it continues to fall, two seconds later the object would be mo *.f1vb3 n*.iodo t/(eay jurl; g/pmtving with a speed of

  17.02: A small object is released from rest and falls freely for 4.00 s ,)oc4n*gfr9(zio,3e z hhdpr until reaching the ground. What was thz,4)9crf*h,o pd(g ro 3ehz ine height above the ground from which the object was released?

  11.06: A ball of mass =0.100 kg is launched la he4b6kn7*m pq;-kdwn dy79straight 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 the kkn6-dmb* 7 ewpn;4aqhd7l y9ball?
D 10.0 N
E 12.0 N

  11.07: A ball of mass =0.100 kg is launched straight u:;hxsznu 8,2:h) wc1s sd noaupward so that 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 its l 8 sx,uwou::dhn; cszahsn1)2aunch?

  98.31: An object slidibig ,6kvg62(bzkbpht3 6w2qj ng down an inclined plane has speed 0.40 m/s two seconds ai vk62h,g6(k zpbg2 bjt6qb 3wfter it begins to slide. Approximately how far does it travel in three seconds?

  98.40: Coin I is thrown upwarv8hy8 3hpq(xeu 1 ao9jd from the top of a 100-m tower with a speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s lat8juhv1peyh 3x( o98 aqer. 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 cr 67bc3mx9b:q;a whmanother, how much higher will it be at its apex? ; rmc3x ba6:bwhm7c9q

  02.30: A box falls to the groyf)b*dy g f3e.und from a delivery truck traveling at 30 m/s. After hitting the road, it slides 45 meters to rest. How long does it take the box to3.ygb* )fyd fe come to rest?

  03.29: An object is thrown upwards with a velocity of 30 m/s )a* )osjsshb 7near the surface of the earth. Afs o7s*sab)h) jter 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 thrown verl;cf )i v+0howtically 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 resistance is negligible. lwc+;)h0iof v

  10.25: Two point objects are launched straight upward with identical zb0 ax/onxm. 4wf. y go*0vmr6linear momentum. Object omaxvmn *y4x6 b. /zorfw00g. 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 launch point in terms of H ?

  04.28: A rubber ball bounces on the ground as shown. After each bounce, the baln1: c;bmj(s njl 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 mjcjbns1n: ;(the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fall achieved its minimum xfifbyqlqm(xpsq.*3 ,45g kpf6-,pk speed during flight. If that minimum speed was 15.0 m/s, what was the projectile’si,5by k,sgx mq-(*f6qkffpq p. x 4p3l initial angle of launch from the horizontal?

  05.02: A pebble is dropk i0fkx)p fje j.pgkwm3w8q++x :h +;mped from a high vertical cliff. The collision 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 re xkim+kwqh038f :x+k +)jpg wfj;ep.msistance.

  06.03: Three students were arguing about the heigc2b gksw-j* .kht of a parking garage. One student sugkb.2cjksw *-ggested 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 along a straight line. Its initial position ismkz;ud k+t, p, x0 = -5 meters and it is moving away from the origin and slowing down. In this cpkzmk+;,u d,t oordinate system, the signs of the initial position, initial velocity and acceleration, respectively, are

  04.38: A small point-like ogn: -y4jn7 :aq p6lypdbject is pulled downwards by gravity (down the plane of the page) but is constrained to exactly follow each of the frictionless pathpag74 nyy: qdlp-:j n6ways 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 u yo7qkpa:p *f 04fwdk3*3 nxca second later another rock, twice as massive as th ucf3o 307 nky:qapwx*p*kdf4e first, is dropped. Ignoring air resistance,

  06.18: A cart is inidkny s945hi2 4k7pafvgmis2 + tially moving at 0.5 m/s along a track. The cart comes to rest after traveling 1 m. The experiment is repeated on t7yh9k+n4 f4vps5i2s k2gdmaihe same track, but now the 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 track. The cart comes w 3xdtxg7s-v3pnc7-b8 l/zo lto 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 far does the cart travel before coming towvl-3bopl7zs/ 38 nxdxgc-t7 rest?

  08.03: A dog starts from2bz k4 (3wdymt rest and runs in a straight line with a constant acceleratio2(4wz3ytkm dbn 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 a height hb 8n kva2jm./j: ,/sz8n zzyjh above the ground. If the ball falls the first distance 0.5h in a time t, how much time is required to fall the remzhjzvn,m /.8s8 jyz/:bnaj2kaining distance of 0.5h?

  10.38: Two objects both move and uniformly accelerate to the right. At time plc o/3fjo mut xev3f797j1y8 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.7jlmx/7o1 t cf3f3pe8 u yvoj9 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 frtx p4h0/n-ay qom 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 flight to the gp40xqt/ a nyh-round? Ignore air resistance.

  13.10: An object is thrown straight u:myq 5iwf6g n;pward. The object remains in free fall until it returns to its initial launch point. Which one of the following graphs could represent the q; im:yw6gf5n velocity of the object as a function of time during its flight?

  14.03: An object is dropped into free fall. Through hcbpsgsxhzv+m; l .4)5ws/ 6bkow many meters does the obj c6ssxb+ z4hwm)/5b.l svp;k gect fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across :8 zc3h56vkgg9bxv*mqzey- c6.w cvo a flat surface in a time of 12.0 s. What was the initi6- *9wckzz.vm6 bxg3y8c5veh ocg:qv al speed of the box when it started its slide?

  14.07: Starting from rest, a cart uniformly accelerates ta ch.d:ez v8;sfufxbmg6h;8q /1k 3ato a speed of 7.60 m/s in a time of 3.00 s. Through what distance doesf;e8 u16g8fhsa mk/ vt 3aq.zb;xdhc: the cart move in this time?

  14.16: A toy car initially moves to the righoqmbn;4j0-063wozqtgub s jm 4z q .c-t 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 thebmt uq0sgo4 z;jn06z3m-q-oc q w. j4b 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 secondrj8v g;r mwe b(w+.kx:s 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+ .;8:bmwvr rwgk( exj 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 movngga hh i mkyan:gk4 xjjq;*, y(u6()/es with 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 moving upward while in free fall. Which x( ecdh 4+.i s qylxoat6n6h43one of the following cxtdix4(hsq+. h646 ln coa y3ehoices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to*gqrr -b*ic5* gf lfs0 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 constant acceleration must the objf*g b sg*ic-r 50fr*qlect have during the 8.0 seconds of stage II?

  15.32: An object mova zk2o g*a pr5y 0z55,m*sbzmiing 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 constantgmm5kp5bz y2* iszoaz0 *r,a5 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 dropped from res6euop/ m.63 ooet bdr.3a :kort. A ball is launched straight downward wit:opr rk t63ooe me.. o36bau/dh 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 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 robot6g6+w:sool 1du hrr n6 accelerates at :lo1 dgn6r+6 sr6how u$8.50\;m/s^2$ 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 verticallc2uf0ghkv)w g* w6 .zb /:e-scj7ksl8xm+viry upward. The 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 is one-half of the maximum height it obtains during its flig8e)lg6kfw2 -hi wurx /gmvs* s.zc:v07 cb+ jkht?