An object is thrown upward with a xvw4n1:(o;ah )b 1orllnuo8m s(+vw xspeed of 12 m/s on the surface of planet X where the acceleration due to gravity is v u()l8n;b( wrmax1:1 os+ooxlvnw h4$1.5 \; m/s^2$. How long does it take for the object to reach the maximum height?

  A ball is thrown straight up with a s*aoin(nh3h t- : *6k cgjk6wwpdi t-*speed of 30 m/s. (only fill in numerical valuht wpo(sdj*hncki3 :-ai w*6*-k6 ngte in the blanks)
(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 ball is thrown straight up with d; **sigk9sbkx,, lqx a speed of 36.0 m/s. How long does it take to retgsl xi dk*9qx*b,;, ksurn to its starting point?

  Suppose a ball is thrown straight up, reaches d-l 0u+puy;l na maximum height, then falls to its initial height. Make a sy updu0;l+nl- tatement about the direction of the velocity and acceleration as the ball is going up.

  In Fig. below, what is the a;f 6pr9kcudjm+lor (;s: mzl,verage acceleration from 0 to 5.0 s?

  Suppose a ball is thrown straight up. What is its of3 : 1kqvra0eacceleration just before it reaches its highest point?1:0 oakve r3qf

  If the velocity versus t:o:9ce- qc iyl,w+s; 0q z 8u4ljypcqkime graph of an object is a straight line making an angle of 30 degrees wi,qw+i4 p zqcs8yq0:kyju9eo: ; c ll-cth the time axis, the object is

  Suppose a ball is thrown -us1-ww4bn1w -yfa mi straight up. Make a statement about the velocity and the uy n---4awf1mw1 wi bsacceleration when the ball reaches the highest point.

  In Fig. below, what is the av9r ynw4 o*owyv,hr /eo1:i(o6oi gb3kerage acceleration from 0 to 8.0 s?

  A ball is thrown vertically upward with a speed v. An identical second ltu+n ajaf7r 12-gy7sx r6 sm8ball 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 ball go than the fig xam1ss t6a+ynu fj7l82- rr7rst ball?)

  The slope of a position vhifs ;b+d fs z ;zhyo/a68j8)fersus time graph gives

  A foul ball is hit straig2zh w2 ek9 zw470 a1wmxagiiz.ht up into the air with a speed of 48.7 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 12 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 12.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the average velocity from mfh )eqfojx,ais: ;0b8.:a r l n2hz;v0 to 6.0 s?

  Ball A is dropped from the to8i eyl7rn 0e4p4zxe8xh 3e+glkno. i1p of a building. One second later, ball B is dropped fromi ze34.ienl+7h ypon r xkxe l8018eg4 the same building. As time progresses, the difference in their speeds

  In Fig. below, what is thes*w v c4o byg;63enj*) at7zvr average velocity from 0 to 4.0 s?

  An object is moving with constant non-zero velocity in the +x axis:1 e kfi rigsg3yr0)9r. The velocity versigr9:erg03 f ys) k1irus time graph of this object is

  In Fig. below, what is the,fk wk,(gb q)e velocity at t = 2.5 s?

  An object is moving with co-mpggsj5 37 reao-tz+up8rd3 nstant non-zero velocity in the +x axis. The position versus t3-p8gogr5r +d epjs 3zt7mu-aime graph of this object is

  If the position versus time graph of an object )o,dvopye q)jr 73ihb.9ba :q is a horizontal line, the object iqh: varpd,eo ) j)q.bo9b3 i7ys

  A ball is thrown upward at a velocity of 19.6 m/s. What is its velocity after x 0r6zx)cvj-z 3.00 szj)6zx r0cvx -?

  If the position versus time graph of an object is a vertical line, t5gnhtk;4/xy nyi 9 qq1he object is/5 4 gt;hiqqxyn9 kn1y

  Suppose a skydiver jumps from a high-flying plane. Wha;bxaw2glex,;8e afhn4s e w) 6t is her acceleration when she she reaches terminal velocia,enlagxhbx6;8); s e4ww e2f ty?

  An object is thrown up06ggn8( xrfp2rr nufd)2xfx - ward with a speed of 14 m/s on the surface of planet X where the acceleration due to gr8 pg xfrnxndf(g22r0- fxur)6 avity is $3.5 \; m/s^2$. What is the speed of the object after 8.0 s?

  The slope of a velocity versus time(h1,lwdr9gxwthj 5 t1sn/9 mg graph gives

  An object is thrown upward with a speed ofvm6a t0twn+)5ql*yhd 15 m/s on the surface of planet X where ay+dq m)6h5 vwl*t0n tthe 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?

  In Fig. below, what is the acceleration at ddcqk:a6 s ebpmk;j4-7q oar )) (6rtg1.0 s?

  When an object is released from rest and falls in the absencwvzi q*2-1ltq92 wxbce of friction, which of the following 12qvtlixqw* -9 wczb2 is true concerning its motion?

  Ball A is dropped from the b:p7t: khg p49qq1 yrwtop of a building. One second later, ball B is dropped from the same building. As time progrew:g9 hq b1prq47yt:kp sses, the distance between them

  The area under a curva;h7 je5(juutr (uq :le in a velocity versus time graph gives

  In Fig. below, what is the displacements1g ta w)r)gm4 from 0 to 8.0 s?

  A ball is thrown downward from the top of a building with an initial spe xk6 -*vcx0fj0czl -0ttv ntx:ed of 21 m/s. It strikes the gk t--tx60fl tvz jvx:* 0nxc0cround after 1.4 s. How high is the building?

  Suppose a ball is thrown downward in the absence of air re(t+zc lf/k+ wdjw/f. m8k*ascsistance. Make a statement concerning it/.jfkm w/t*k+ccad(+lz8fw s s acceleration.

  A brick is dropped from the top of a building. A l+c jd1* m+/e 17fkuu t84uhasr: fevusecond brick is thrown straight down from the same:asj t 8e+m7+1u/lrfu* 1cekudf 4uvh building. They are released at the same time. Neglect air resistance. Compare the accelerations of the two bricks.

  In Fig. below, what is the velocity at t = 5.5ar u5ud9n pw82 s?

  Two objects are thrown from the top nx1xqu1up 7)e of a tall building. One is thrown up, and the other is thrown down, both with the same initial speed. What are their speeds when they hit u1unx )ex 1q7pthe street?

  In Fig. below, what is the15e2hk yt 9c;baz 8x r0z4cqhv acceleration at 3.0 s?

  In Fig. below, what is the velocity m+t9 vr yd347 f equiudm*p9g0at t = 4.0 s?

  Human reaction time is u42vu. 2bjr/kqcxp/e yvf7eg- sually greater than 0.10 s. If your friend holds a ruler between your fingers and releases it withou2/.bkjq2vf4 7xeycer/pvu g - t warning, how far can you expect the ruler to fall before you catch it?

  The area under a curve in aq /(p1cbtmde:76 g whxn acceleration versus time graph gives

  An object is moving wor90j, rs /su frqlt:(ith constant non-zero acceleration in the +x axis. The velru lf0:qosr(/9t, rsjocity versus time graph of this object is

  When an object is released from rest and falls in the absence of friwjw1y wx5 y,kd 1:ggt apa5w*2v3/mppction, which of the following is true concerning its motig:m w5kgwy 3w p21vyp/adjxw1, t5ap*on?

  An object is thrown upward 9(bd 8fm jf4lqwith a speed of 12 m/s on the surface of planet X wherlff89j mq d(4be the acceleration due to gravity is $1.5 \; m/s^2$. What is the maximum height reached by the object?

  A bullet shot straight up returns to its startmv87* 80z9lszlxrw3f et w1ining point in 8 s. What is the initial s3 8smvlrz 8ef w1*w7xn 0lzt9ipeed of the bullet?

  If the velocity versus time graph of an object 1q(u5pbtr*23h s6abxdwl 9dfis a horizontal line, the object slqd 63 xadb(tfp h1b2wr 95u*is

  An object is moving with consta8w6u prg oa*-mmjxg31nt non-zero acceleration in the +x axis. The position versus time graph of this object isxawumg-r 1*jpo863gm

  A ball is thrown straight up, reaches a maximum height, then falls to itsw un) xyb2l::k)qt-gw initial height. Make a statement about the di tk )buxg):w -2yqn:lwrection of the velocity and acceleration as the ball is coming down.

  In Fig. below, what is the ve8qs4t n /xho+mr ++foelocity at t = 1.0 s?