94.01: Starting from rest, objectfawclzt p/at-(d3k9 , 1 falls freely for 4.0 seconds, and object 2 falls freely for 8.0 seconds. Compared to object 1 w,pafak t-td(c z9l/3, object 2 falls:

  94.02: A car starts from rest and uniformly accelerates to a fiqju 5bz01s oe+nal speed of 20.0 m/s in a time of 15.0 sjz1u 50esqb+ o. How far does the car travel during this time?

  94.03: A ball is thrown off a high cliff with no horizontal velocity. It lands 6jgte; yb*zvsx .zq0-4.0 s later with a veg y e4-vzzbj*0.qsx; tlocity of 40 m/s. What was the initial velocity of the ball?

  95.27: A rocket near the surface of the c6; r;xsafe3yu2 (j msearth is accelerating vertically upward 6j ;(3ersmu xasf;c2 yat $10\;m/s^2$. The rocket releases an instrument package. Immediately after release the acceleration of the instrument package is:

  95.13: A freely falling body is found tg1m - rhixt0b6 :oi73gkf1zv fo be moving downwards at 27 m/s at one instant. If it continues to fall, one second later the object would bh k3if rgmfx1z-i7 bgt061ov: e moving with a downward velocity closest to:

  95.39: A car starts fo3l o9: ub;awprom 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 st-fp d2z6kk wix6k/8strikes the ground with a speed of 30 m/s. Assume air resistance can be ignored. The height of the building is approximasxz2/ fkk d-kwpi6 86ttely:

  97.09: At a certain time, an object in free fall has velocit,1xx7twh 3o6zj u8g pby 4.0 m/s in the upward direction. What is the approximate velocity of the object one seco x6gox 17 h,ju8zptw3bnd later?

  98.14: How long must lud4eq/0 jt 5ea $2.5\;m/s^2$ 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 .asce 6twft7 ttg/p8 :moving downward at 18 m/s. If it continues to fall, two sec8.sptt 7w6t a/tc:f geonds later the object would be moving with a speed of

  17.02: A small object is released b*oka6b8*m ,isk5 +jx5r:yx;x bamlvfrom rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which bx5+b6xrxjaa;,i*lov *ms mb58ky: kthe object was released?

  11.06: A ball of mass =0.100 kg is launcheddp(q7ed 6 xe6v ky67;nl mumg5 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 ma5 lyxgm6(d67kvp7 me;6d un qeximum height, 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 rza; 1qbdb g62straight upward 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 qd z;2b abr16gits launch?

  98.31: An object slidig5vut3 h )hm9s* (0f 9akstc 3qca3gn-kq lsr:ng down an inclined plane has speed 0.40 m/s two seconds after it begins to slide. Approximately how far does it travel in three seconds?-9u )* 33kgvgacmk alsnrtq9hc0s :f s(3tqh5

  98.40: Coin I is thrown upward from the top of a 100-m tower with f(cg lbbp8:n do v+(3ua speed of 15 m/s. Coin II is dropped (zero initial speed) from the top of the tower 2.0 s latfb3l :ou+g( d8 (ncvpber. 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 upwasne;rf7 3 0kvtrds with twice the initial speed of another, how much higher will it benrt e0;s v7k3f at its apex?

  02.30: A box falls to the ground from a delivery truck traveling at 30 m/sx+e cf1ab1 *vox0p.gu . After hitting the road, it slides 45 meters to rest. How la.b0p uvo1exg+1 x c*fong does it take the box to come to rest?

  03.29: An object is thrown upwards with a velocity 1ppus -o1lm)fof 30 m/s near the surface of the pf1o p-l) usm1earth. After two seconds what would be the direction of the displacement, velocity and acceleration?
displacement velocity acceleration

  04.10: Three stones of different mass sq pd:gswl9)ez, a7+pg ;1t/(ktmp ya(1m, 2m& 3m) are thrown vertically upward with different velocities (1v, 2v& 3v respectively). The diagram indicates the mass and velocity of ee:zpag9 ,ypskw1q/s ( +7t)a; pdglmtach 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 identical linear mom-. o6xpt y5atyentum. Object 1 has mass M and reachest- o6 tax5yy.p 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 ke g i-tl rgg,19(v-eveach 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 regie -vgg t,1vlk-(9 be the time between the second and third bounce?

  16.21: At 1.94 s after launch, a projectile in free fazbobwdz8+:4agg8p (zxp :cvbej e/w 3q/q 5)h ll achieved its minimum speed during flight. If that minimum speed was 15.0 / pg(b j: qq84xe vzz c5)8 /:+w3zabphbeodgwm/s, what was the projectile’s initial angle of launch from the horizontal?

  05.02: A pebble is d,ock+9,yw ,qv: p mhw1g p4rqzropped 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 resisg p:z,y1qcq4r ow,mk h+ p,wv9tance.

  06.03: Three studentk y nhrn c8loho;f5s+fg-v;58s were arguing about the height of a parking garage. One student suo ;sn8og+55hhv ; y8-rclnfkfggested 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 inj(v:hy qwe 9sl:n8 bu-a:j:wjitial 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, initia9ah u:bjvw:q( jl:8es-nw:jyl velocity and acceleration, respectively, are

  04.38: A small point-like objectn ko:;09+83z+ddaaprxoutwh is pulled 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) necessar wo x+d:dh+ at98k;unz03paroy 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 t-ei pq8i,o7c,zs j wx0all tower. Half a second later another rock, twice as massive as the firsz j ii,q8ex-ow p,s0c7t, is dropped. Ignoring air resistance,

  06.18: A cart is initiallsh(mn)xci(3l rbu e6qv3 v.t;y 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 tv3 c v.r6et3un )hb;li x(qms(he 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 ca,(p suoh3d*69h culgux) 7qlxg z1o;frt comes to rest after traveling 1 m. The experiment is repeated on the same trackx3 cudoof*7l,;g 1xg(sl)puqz9uhh6 , 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 str b3nay y)-yl5lt(y.xwaight line with a constant accelerationyl5 .x 3)bnyy(a-lwyt 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 initiallo x.r0, bpx8quy at rest falls without air resistance from a height h above the ground. If the ball bo8 xq 0urp,x.falls the 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 accelerate to the right. At time t=0,aq: c1f)oxl x;+ )stx u/,bnprthe objects are at the same initial position. Object 1 has initol b,1;:nrs/a pcx)+x u x)qtfial 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 in this time T by Object 2 to that traveled by Object 1?

  12.26: An object is thrown horizontally with speed +l5ie* fvg8t2ckml( t10.0 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 best represents the time of th8 +vt* i(mtlekf2g c5le object’s flight to the ground? Ignore air resistance.

  13.10: An object is thrown straight upward. The object remains in fre5vc*tthklb/kx a *qmv 68vd4-e fall until itkv4h b5xk6v ct/ l*8q-tv* dma 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 flight?

  14.03: An object is dropped into free fall. Th(4qyaztf1 s4dk g/jpe, s,9rbrough how many meters does the objjf94eg ,za qk/1s (rspyb,4d tect fall during the first 3.00 seconds of flight?

  15.02: A box uniformly slides 7.50 m to rest across a flat surface in a tf ** +hrydtjc-9cek+ dime of 12.0 s. What was the initial speed of the box when it started-k* cthrfddc 9y*e+ j+ its slide?

  14.07: Starting from rest,g 0ov ec;4iy+k a cart uniformly accelerates to a speed of 7.60 m/s in a time of 3.00 s. Through what distance does theo ;40vgke c+iy cart move in this time?

  14.16: A toy car initially moves to the right at 60.0 cm/s. Five seconds later03 rpkk3ay ienkn/.a yfrr9nanm/8h*8u 7x : f, 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 ofr.98rnhfanyk3 e0knxr /*7i n3yaka /p 8m:uf the average velocity of the car during the five second motion?

  14.17: A toy car initially moves to the right a-kq(a r;9 vz9liaoh 1ut 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 t;9oazi9vh 1l q-u(ar ko 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 kr09 9i0nahjow1- qcsconstant 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 initiallyjblvj+b1w 1 0 0ez6lyg is moving upward while in free fall. Which one of the following cho+6eb 0jz g1 yj1w0lvblices best represents the direction of the object’s acceleration during its flight?

  13.26: An object moving only to th*qpgxou9vg-.yfi .(p e right completes a 20.0 second trip in two stages, I and II. The average speed of the entire trip ioy-p9.g* f (pvqug .xis 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 object have during the 8.0 seconds of stage II?

  15.32: An object movkjm1e yo.8rn prtpt12/s *:wr ing 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 magnitud12rmnw1r.k*t/p t po r esj:y8e 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 rest. rr pgy*ii. -:mA ball is launched straight downward with an initial speed of 36 m/s at a time 2.10 s after the . mrpi:*rgi-yrock 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- 9xr0d)m bwbke 5gt82tr0 /xsddriving car races with a robot. The robot acceleratesr0t 2k09)rb /e gwsmdtxx 58db 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. The vertical7 lbw:5v6r yxt 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-:ywlrx7t v6b5 half of the maximum height it obtains during its flight?