A foul ball is hit straight up into the air with a speed ob1ebo4b vjgo r03 a6k1f 21.3 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 1 seconds later.  (数值)  $m/s$
(e.) Determine the time at which the ball pass a point 9 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 9.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the average acceleration from )1o(y;dzzqn)md 8g8k: dque * cumkm ahl+9v2 0 to 5.0 s?

  An object is moving with constant non-zero acceleration in the +x axis. 0mffh:a zvh;1x:svhq66g 3i vThe velocity versus time gh:h 1;mhgzsai 6f30vqx:6vvf raph of this object is

  If the position versus time gr4iex-,*zd.. 6s-c qvn ka xobfaph of an object is a horizontal line, the object *f..ces6 nzq-xvxik d a4-,bo is

  Suppose a ball is thrown stratkb5q g2,::dg h tuo8uight up. Make a statement about the velocity and t:5g t8 k:h2 bo,qgutduhe acceleration when the ball reaches the highest point.

  When an object is released fr4p*bwkis41hd9, 9lz2 zkt*gfc 0cdl uom rest and falls in the absence of friction, which of s dic9 ,l2g4fw1 0*lz9u zdbcktk4ph* the following is true concerning its motion?

  Suppose a ball is thrown straight up, ryplxs*q3( p4tol,c a 7eaches a maximum height, then falls to its initiall3*ayptl4p,q(sx co7 height. Make a statement about the direction of the velocity and acceleration as the ball is going up.

  Two objects are thrown from the top of a tall building. One is thrown up,v09ykxos6 za 7awm8 t- and the other is thrown down, both with the same init -w7o6y at89vzam0kxsial speed. What are their speeds when they hit the street?

  An object is moving with constant non-zero velocity in the +x axis. Theyo l+1mb5abi 9 eqw-p( velocity versus time graph of this objec -bl( wy9apqioemb 1+5t is

  Ball A is dropped from the top of a building. One second later, baf1.q*wa+cl8tzzr6s h ,dx g x-ll B is dropped from the same building. As time progresses, the differex 6z, sx1c hd+.*8lwq zft-argnce in their speeds

  An object is moving with constant non-zero velocity in the +x axis. The posit d,(s k,axv :mf:beud*(ig sn-ion versus time grapb, -mf(vak i,s(gxudend s:*:h of this object is

  An object is thrown upward with a speed of 15 m/s on the surfz8x:2x1 yruqdgb)q9 6o hug3s t26zas ace of planet X where 2 aqz6gu13uy gd2qtso9r8zx 6x) hbs:the 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?

  A ball is thrown vertically upward with a speed v. An identical second bk 31k(+kko:cz prcex (all 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 the first ballk z: oe1k(cp3r(+ kxkc? (How many times higher does the second ball go than the first ball?)

  A ball is thrown straight up, reaches a maximum hb2r zpna1b5 k3eight, then falls to its initial height. Make a statp a3b 2nkr5b1zement about the direction of the velocity and acceleration as the ball is coming down.

  When an object is relendq8hn1x.od vf )j)x 0ased from rest and falls in the absence of friction, which of the following is true concerning ivh fj8.1)do0qnn x)dx ts motion?

  An object is thrown upward with a speed of 12 m/s on the surface; dra)0)wv2gf hq wbo7 of planet X where the acceleration due a0)7 r)hwdofgw vbq 2;to gravity is $1.5 \; m/s^2$. What is the maximum height reached by the object?

  A brick is dropped from the top of a builv8uts:-) syuvat 2fw9vkf) f*f5ma+vding. A second brick is thrown straight down from the sv smfk*uf)uvv-9wvy82 : tf) 5 f+staaame building. They are released at the same time. Neglect air resistance. Compare the accelerations of the two bricks.

  Human reaction time is usually greater than 0.10 s. If your friend holds ml;,n)ksu oy/l cc//2c1lg 6i*a tdima ruler between your fingers and releases it without warning, how farc)l,6dloc*ca1g ymuil/k/ ns 2; mi t/ can you expect the ruler to fall before you catch it?

  In Fig. below, what is vg:4j04 b zkjnxfyq( z**ts5k the velocity at t = 5.5 s?

  An object is thrown upward with a speed of 12 m/s on the su2-z p(1m frqp/jnp8tirface of planet X where t/j fnprq 8tip pz1(m2-he acceleration 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;4e 4u,br pvg w4gzw9e the average acceleration from 0 to 8.0 s?

  A ball is thrown upwaf 1k7vh*q o risq2 mn5ye59-trrd at a velocity of 19.6 m/s. What is its velocity after 3.00 nhr 9*2fe1m5 t5orq7- qvyksis?

  The area under a curve in an acceleration versu ;vna6lzxfg bn/ +cm+4s time graph gives

  The slope of a velocity ver kvnx ezg(30:)2n nfszsus time graph gives

  A ball is thrown downward from t by57-kn+ 0on lctu0nthe top of a building with an initial speed of 8 m/s. It strikes the ground after 4.7 s. How high is to 0tnluncbt07n 5 -k+yhe building?

  If the position versus time graph of an object is a vertical line, the o06(v1. ascefq *mqurt bject is. 0*6r (qcesfu aq1tmv

  Ball A is dropped from the top of a building. One second later, ball B is d/+ )xm 8fb 9k,woahwtcropped from the same building. As time progresses, the distance9ktfmb h8 cx)w/+ao,w between them

  If the velocity versus time graph of an object is a straight w ryl:4by wl5dym:*1p line making an angle of 30 degrees with the time armwy:5w4yy:ld*b 1pl xis, the object is

  If the velocity versus time graph of an object is a horizontal line, j4gdk9h+ozq 6+f9k zcfxr 50athe object ixhc096 o+azrf5 j+9g f4kdk qzs

  A ball is thrown straight up with a speed of 36.0 m/s. How x; w 3a/1s)owjf p,vkulong does it take to return to itok)/xwpsf ; vu,wa 3j1s starting point?

  In Fig. below, what is the velocity at t = 4.0 2mf ff qi9 how/nj;vr 7.-cze7s?

  In Fig. below, what (-ug7qhz0 r7kqr voc8bq;;rcis the velocity at t = 2.5 s?

  Suppose a ball is thrown downward in the absence of air resistance. Makeb,0. y by;zyxb a statementbxy,.y z0bb;y concerning its acceleration.

  The slope of a position versus time graph gn57lo 1 futr:q(i/vgw ives

  A ball is thrown stra9r sno uq+3+kcight up with a speed of 30 m/s. (only fill in numerical value in the blanksqus+ rkc3o+ n9)
(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?    $m/s$

  An object is thrown upward with a speed of 14 m/s on the surface of plane.1eaa dfllrp a:pt63(t X where the acceleration due to 6l plp1(def:r.at3 aagravity is $3.5 \; m/s^2$. What is the speed of the object after 8.0 s?

  In Fig. below, what is the average velocity from 0ipj.5*tnmys2 ,f6, ql u k*zqky1e:sh to 4.0 s?

  In Fig. below, what is ttrhsjg ukr38(4-c9cb he average velocity from 0 to 6.0 s?

  In Fig. below, what is the displacement from 0 tm5 o9qij3hbg(- (ulfw sv77ql o 8.0 s?

  Suppose a ball is thrown straight up. What is its acceleration just before it g.ua7 ycr-v y,reacu ,7ray.-cyv ghes its highest point?

  Suppose a skydiver jumps from a high-flying plane. What is her acceleration wh i 6bbs2pwb0 nft95r7yodj60 gen she she reaches terminal velocit260t fpwboi69 s7b rbgynjd0 5y?

  In Fig. below, what is the accel 86oreq8es jb74ssy6v eration at 1.0 s?

  The area under a curve in a velocity versus time graphwj m a 8l+ *yq+yjlztrx*/f6j5 gives

  In Fig. below, what is the accn 9ivgc 4hw2r6.a:s oxeleration at 3.0 s?

  An object is moving with constant non-zero acceleration in the +x axis. The ,kd ba(y9hn6 tposition versus time graph of this objebhdk,6 9yant( ct is

  In Fig. below, what is the velocity at t = gl x-uj(q hxyoe:6 wf:* gp520ybai(r1.0 s?

  A bullet shot straighv/ lxt3f*e dhi1 mm,,bt up returns to its starting point in 10 s. What is the initial*ex l3,itdh/1m mvfb , speed of the bullet?