The slope of a position versus time grapin vmmj* x/99rh gives

  An object is thrown upward with a speed of 15 m/s on the surfan .7ta g-6q3d oftswx1ce of planet X where tt.aw3gtn 7d f-qx6s o1he acceleration due to gravity is $2.5 \; m/s^2$. How long does it take for the object to return to where it is thrown?

  Human reaction time is usually greater than 0.10 s. If your friv hbk(;gg9z p)end holds a ruler between your fingers and releases it without wa)pk(v bg; gz9hrning, how far can you expect the ruler to fall before you catch it?

  Suppose a ball is thrown straight up. Make a statement about the velocity anqib yn8iif22z r7 imv ,*7f75vsfrl; od the acceleration when the ball reaches the highest7q;i y8bz f im7 fo,*fl2527vsrvii rn point.

  When an object is released from rest and falls ku6e0o( xcvkg 7rxu l+ avqzq ;t1*13ein the absence of friction, which ofk1 u vq(3ueezx1q v* ; r6lat7o0cgxk+ the following is true concerning its motion?

  If the position versus time graph of an object is 6ro+k8gmup 7( ( ;g6rzyftudna vertical line, the object is6k6gt( m(y+u;r7unpof rzg8d

  In Fig. below, what is tb)z.xsxw3eaoehv fl/ -e7alz9 ;ag,8he acceleration at 1.0 s?

  An object is thrown upward with a speed of 12 m/s on the surface of planerc511 cbja( gb(dr9gv t X where the accer1(v (dgbj 1a9 5crbgcleration due to gravity is $1.5 \; m/s^2$. How long does it take for the object to reach the maximum height?

  In Fig. below, what is the velocid rk1iq,bl ,lu1fl3 7tty at t = 4.0 s?

  An object is moving with constant non-zero veloc1tmrj f9m nhq8i873oy ity in the +x axis. The position versus t 88f mni79yrj1 om3tqhime graph of this object is

  The area under a curve in an accelerat8lupm-yjmb39kt*a d-43 dc1sydv s0xion versus time graph gives

  An object is moving with constant non-ze5v m6 qame )p*i haf+)xj8wtr-vo1c z6ro acceleration in the +x axis. The velocity versus time graph ofm68a-rj)p6zw5+ fv e)xmqa1*i thco v this object is

  Ball A is dropped from the top of * pk*pn)xi; afa building. One second later, ball B is dropped from the same building. As time progresses,n*;f x) ppka*i the difference in their speeds

  A ball is thrown downward from the top of a building with anhub. sbc:; f wbe89;nd initial speed of 14 m/s. It strikes the ground after 3.9 s. How high is the b c e;. hws:bfbb89u;dnuilding?

  A foul ball is hit straight up into the air with ex,(r+euyyww,o 4 hr(a speed of 28.6 m/s. (use $g=10 \; m/s^2$, only fill in numerical value in the blank)
(a.) Calculate the time required for the ball to rise to its maximum height.  (数值)  $s$
(b.) Calculate the time for the ball to fall back to the height at which it was hit.  (数值)  $s$
(c.) Calculate the maximum height reached by the ball.  (数值)  $m$
(d.) Calculate the ball's speed 2 seconds later.  (数值)  $m/s$
(e.) Determine the time at which the ball pass a point 5 m above the point of contact between the bat and ball for the first time.  (数值)  $s$
(f.) Determine the time at which the ball pass a point 5.0 m above the point of contact a second time.  (数值)  $s$

  A ball is thrown straight up with a speed of 36.0 m/s. How long does it take gtk+jq8c-6 i kto retu8ki6 jcqt+g-k rn to its starting point?

  Suppose a skydiver jumps from a hix . j+e*fae7dggh-flying plane. What is her acceleration when she she reaches terminal vee.d+ga* 7x fjelocity?

  In Fig. below, what is the average accelerato -ksydpqqdd;1s,,lcu,b1kz sg, -y5ion from 0 to 5.0 s?

  If the velocity versus time graph of an object ii l0lu:s *y3yw1h(qj mq gcr40s a straight line making an angle of 30 degrees with the time axis, the object 4i3g hry lcq*y uj:1(lwmq0s0is

  A ball is thrown straight up with at7er g/;slu e6 speed of 30 m/s. (only fill in numerical value in the blanrg; /ue6les t7ks)
(a.) How long does it take the ball to reach the maximum height?    $s$
(b.) What is the maximum height reached by the ball?    $m$
(c.) What is its speed after 4.2 s?    $m/s$

  A brick is dropped from the top of a building. A second brick isit9acsps u .11 thrown straight down from the same building. They are released at the same ticu1ais 1t .ps9me. Neglect air resistance. Compare the accelerations of the two bricks.

  When an object is released from rest and falls in the absence (uh b men-nwfh2kip3/1nc2sh m5m ((zof friction, which of the follo51si n(nmwc/b-unm3p (mkfe 22zh(hhwing is true concerning its motion?

  An object is moving with constant non-ze0x5:nmx st8;(v w i j6o:m7lzjmo/oqd ro acceleration in the +x axis. The positiond j:x:owz/5 6sjvn l(o0i7m om;qt8x m versus time graph of this object is

  If the position versus timeqcqy+ j3v lqf71d5irl/8h4nfay:cz * graph of an object is a horizontal line, the object isfll *3jqzq y/iqr 78fc:ac+dv51yn 4h

  In Fig. below, what is the acceleratij2mlg.h0pggi xdu*kl2 /m 0/kon at 3.0 s?

  Suppose a ball is thrown straight up6ldg6qg:;es-)iec y q, reaches a maximum height, then falls to its initial height. Make a statement s6egl 6g:qc;qd) iey- about the direction of the velocity and acceleration as the ball is going up.

  Two objects are thrownq/xguuhl8fwafc(- o-jd:- (h from the top of a tall building. One is thrown up, and the other is thrown down, bdu/(u8:(lxga-cffqj --hhw o oth with the same initial speed. What are their speeds when they hit the street?

  In Fig. below, what is the velocity at t = 5.5 k pvrf4 7)hmorlk7gon/);px m61 eil* s?

  In Fig. below, what is the displacement from 0 igw.j4v0fm )c to 8.0 s?

  In Fig. below, what is the average vi h uth-4z98zvelocity from 0 to 6.0 s?

  The slope of a velocity versus fzb 527mnv vc689gsd ytime graph gives

  In Fig. below, what is rjhq6mpv7wbu9 f,w 2b4 ,cy 1tthe average velocity from 0 to 4.0 s?

  The area under a curve in a velocity versus time grap.yah 395z7kd +vgtisuh gives

  Suppose a ball is thrown downward in the absence of air resistance. Make a stm,glm0,3*d vjr2wb n 8j4bg suatement concerning itb*js2mv ndgmj43br, 8g 0 ,luws acceleration.

  Ball A is dropped from + 4 tqy2u/+w f iphwg gclhb-j(5brb20the top of a building. One second later, ball B is dropped from the gh( +tc bgqr fp5hw04-/uj+2l bybi2wsame building. As time progresses, the distance between them

  An object is thrown upward with a speed of 12 m/s on the sur/ otwz0i33htg face of planet X where gw z33ot i0th/the acceleration due to gravity is $1.5 \; m/s^2$. What is the maximum height reached by the object?

  An object is thrown upwa57bqo mx1 06a7ukca kdlc2a/ g go99vtdnv;8vrd with a speed of 14 m/s on the surface of planet X where the acceleration due to gravity iavgdo l 2ckv1k a v79o/d 6c bau9;mxg7tq058ns $3.5 \; m/s^2$. What is the speed of the object after 8.0 s?

  A ball is thrown upward at a velocity of 19.6 m/s. Whf7lunfiwn 9m2/o*gv3at is its velocity after 3. i9*u2gwvf3l7 n/of mn00 s?

  A ball is thrown straight up, reaches a m yyz7, g6-qsrei-qw ec4is6f *aximum height, then falls to its initial height. Make a statement abou-is sy6 6 ,yeerzf74qqw *gi-ct the direction of the velocity and acceleration as the ball is coming down.

  In Fig. below, what is the average acceleration from 0 to 8.tg/j qr53i1go 0 s?

  An object is moving with constant non-zero velocity in thu*gfjiv:hv/2 8 ,zf frhlt3. de +x axis. The velocity versus time graph of this objeclt.dv fg fj fviz3uh2*,r8h:/t is

  If the velocity versus time graph of an object is a horizontal line, the objectr) t:+ :.vggi1lk5rb0xi dk et :bii v 5l0re dr:+1gxgtktk.)is

  A ball is thrown vert4wsn/v q-fzr8u2oz 24wo*ll kically upward with a speed v. An identical second ball is thrown upward with a speed 2v (twice as fast). What is the ratio of the maximum height of the second ball to that of thefqu o8 4lv4r2w-2on zkzls/*w first ball? (How many times higher does the second ball go than the first ball?)

  In Fig. below, what is the velocity at t = 1.0 s?(aeqi fvqm :0pf .2sn3

  A bullet shot straight up returns to its sa0xzch;hr ip2 r;n30gu:z1eny x jg(5tarting point in 15 s. What is the initial speed 3 irh;g j15 nzue0nzpr;:h(y0 axcg2x of the bullet?

  Suppose a ball is thrown straight up. What is its acceleration just before i1 en4mjf upquj-p5( 4pt reaches its hig-jm4 f ppp1(quj ne5u4hest point?

  In Fig. below, what is the veloau 8oo7 y(wb0 ;j2zclrcity at t = 2.5 s?