A ball is thrown straight up with6v5ji1 kbaxjp-vv.qv oh4c*0 jer c: 9 a speed of 36.0 m/s. How long does it take to return to its sta jc4- vajcjhv xpbq6k9:. oe1rivv05*rting point?

  The area under a curvn: nh)dva8wvy1:mks(e in an acceleration versus time graph gives

  In Fig. below, what is the 6ss k.44ppibfvooi ,- b4pht+z.obo 7 average acceleration from 0 to 8.0 s?

  An object is moving g1h3xp 6 brnm.with constant non-zero acceleration in the +x axis. The position versus tihxp.nm b136r gme graph of this object is

  In Fig. below, what is the vee;v(/ahs( cdz locity at t = 4.0 s?

  If the velocity versus time graph of an object is0 nh2gf -ynxg6jvp5i5 a horizontal line, the object if-0pj 25igg6hnn 5yv xs

  When an object is released from rk8 f v)n s,ey: ejh6j3vc2cqz8est and falls in the absence of friction, which of the following is true concerninnv8 6c3fj8 2q),sj ehzvcke: yg its motion?

  The area under a curve in a velocity veg,ym jl+z83m7cg q t++ow1pqrrsus time graph gives

  The slope of a position versus time graph g gb58. qd -dovh.3wcv/ivm y;tk :ho+uives

  Suppose a ball is thrown doet1r,lwvl 5j1 wnward in the absence of air resistance. Make a statement concerning its acceleration5llrw 1vj 1t,e.

  Suppose a ball is thrown straight up, reaches a maximum hein2 h;g-hrxi e- -2d/pi aia6nnght, then falls to its initial height. Make a statement about the direction of the velocity and anhexg i-;6ia2pn r2iha -/-ndcceleration as the ball is going up.

  A foul ball is hit straight up into0 zt0oho+k *f44qxapo the air with a speed of 32.8 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 14 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 14.0 m above the point of contact a second time.  (数值)  $s$

  Human reaction time is usually greater than 0.10 s.lz;b*rjo7( 2jqt,e zprjt v -2cjd:h 0 If your friend holds a ruler between your fingers and releases it without warning,(:, -b2*hzd;t oj qrljpzrj2tjcv e70 how far can you expect the ruler to fall before you catch it?

  In Fig. below, what is the velocizl* f*(l5kdfk*3s(fvufcf 0gxo k48tty at t = 2.5 s?

  A ball is thrown vertically upward with a speed v. An identical seco0/llycjwll f9n/r9 j (nd 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 the first ball? (How many times higher does the second ballc(nr lj9y9 0/lwfll j/ go than the first ball?)

  In Fig. below, what is the average acceleration from 0 to 5.0 s?z4hg4pl7qt0ji qc o;ne8 ne*6

  Suppose a ball is thrown straight up. What is its acceler4jbrm-ilr04 (8obmhration just before it reaches its highest poin-lr r(0obrimm8bhj4 4 t?

  An object is moving with constant non-zero acceleration in the +x axis. /hzcq1(a6-hr2:nz)ht5 g1jl j yfxmo The velocity versus time graph of this objl 1oz51qm-fh(rayj)z/ j 6xtg :nh2chect is

  If the position versus time graph of an object is a vertical liv *( *h7s6hqkoq.t lovtos4(fne, the object isl7qq s(o (hf*6kvtt o*. s4ohv

  In Fig. below, what is the velocii a) z+4xm7.auiai5ccw.4l)uj rm3dety at t = 1.0 s?

  If the velocity versus time graph of an object is a straight line making pq7b- zzeu.kt y96m k1an angle of 30 degrees with the time 691bmkz y-zpk.u q7t eaxis, the object is

  A ball is thrown downward from the top of a building with an initial sp8)ldt5w*r 9at)(6dx fwm iex xeed of 7 m/s. It strixdw) )96x*5latxtm e (idwf8r kes the ground after 6.4 s. How high is the building?

  Suppose a ball is thrown straight up. Make a statement ab1;gocbo; krhim2b2(bj s9nn n 6y/9duout the velocity and th; gj2d9boc (nrm nb6u9nhsk/io y;1b2 e acceleration when the ball reaches the highest point.

  In Fig. below, what is the displacemen9 .-t+w ralejqt from 0 to 8.0 s?

  Ball A is dropped from the top of a building. One second later, ball B is drv d fb//9w(dnropped from the same building. As time progresses, the distan9 vddf/ r(w/bnce between them

  An object is moving with constant non-zero velocity in the +x axis. Th2sf gv yo-*5wc8i uk6se velocity versus time graph of this object ksvf*c i5o wu8s6gy-2 is

  A ball is thrown upward a4p8qraemy eq 7kkl3((t a velocity of 19.6 m/s. What is its velocity after 3.e4pr8a k qky(3l(qme7 00 s?

  A brick is dropped from t/vjd*hw7a)f;siw+*ywbfd z dz9 ds/ 0he top of a building. A second brick is thrown straight down from the same building v9+sad dw w;hd7jzszdf*y *fbw0i/)/. They are released at the same time. Neglect air resistance. Compare the accelerations of the two bricks.

  In Fig. below, what is the accewr/t .yc,u1xxleration at 1.0 s?

  If the position versus time grazb3 sow0.ca :eph of an object is a horizontal line, the object ise 3oz:sa0b. cw

  An object is thrown upward with a speed of 12 m/s on the /eglqxl3-:t g 6--y4gwovf f lsurface of planet X where the acceleration due to gravitytl -lg:63ge-4f l/gx-ow fqvy is $1.5 \; m/s^2$. What is the maximum height reached by the object?

  In Fig. below, what is the velo/,3*fszq+(d9uw8 d wyv7kjil-qaw z gcity at t = 5.5 s?

  In Fig. below, what is the averaczopnh 79 ;+)q4tanmp ge velocity from 0 to 6.0 s?

  Ball A is dropped from the top of a building. One second lategt8ifvxqc eu:j v07lt).ky( ;r, ball B is dropped from the same building. As time progresses, the difference in thei t)l;i (u7kvq te.fxcgy:08vjr speeds

  The slope of a velocity veo 80ubo ,fj02 jkn*0 su)beglzrsus time graph gives

  An object is thrown upward with a speed of 15 m/s on the surfacea.+h0 zk,rp hy of planet X where the acc+zhp,y ar hk0.eleration due to gravity is $2.5 \; m/s^2$. How long does it take for the object to return to where it is thrown?

  In Fig. below, what is t ,(jb5(gew uc(sfcl i2he acceleration at 3.0 s?

  A ball is thrown straight up with a speed of 30 m/s. (only fy -4tv0woq/om ,6ukyyill in numerical value in the blanks4vuoy,wq tk- yym60/o )
(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 surfaci ln5myju2kq8; p9g/s;1i vsve of planet X where the acceleration due to 59u qk m;y;lv/isjg2 snpi18 vgravity is $3.5 \; m/s^2$. What is the speed of the object after 8.0 s?

  In Fig. below, what i1habe av3xx4c9x b39ws the average velocity from 0 to 4.0 s?

  An object is thrown upward with oe0b9e2sayv l e8ib ;ko.o7yv y,a;a0n.u v*ka speed of 12 m/s on the surface of planet X where the acceleration due to a29v ae.e8o yysa;0v7 b*vl0io, . kk ony;uebgravity is $1.5 \; m/s^2$. How long does it take for the object to reach the maximum height?

  Two objects are thrown from the top of a tall building. One is thrown up, and .7+ naacgdlu, j zzy-zu* c:st6 u*ev7the other is thrown down, both with the same initial speed.* djlu-a,*6n gzta:.7yzuc +uevcs z7 What are their speeds when they hit the street?

  A bullet shot straight up returns to its starting point in 5 s. What is /d3hce4r x 4nbthe initial speed cn4x 4d3r/ebhof the bullet?

  A ball is thrown straight up, reaches a maximum height, then falls to itsussynpr t.4j:,/f qp- initial height. Make a statement about the direction of the velocity and acceleration as tqs rjt :p f-n,/y4.pushe ball is coming down.

  An object is moving with constant non-zero velocity in ts k86ae1vc ayvg)q00xhe +x axis. The position versus time vc 01s0vgx6a8eqaky )graph of this object is

  Suppose a skydiver jumps from a high-flying plane. Wha3hjlltm 23wy .t is her acceleration when she sy2wmt h3jl3 .lhe reaches terminal velocity?

  When an object is released from rest and gr*1klv47z mth3)k ahfalls in the absence of friction, which of the followitg hlm4hrk1z *37va)kng is true concerning its motion?