A ball is thrown straight up with a speed of 30 m/s. (only fill in numer)5/ c0cope;7la4frjx0gx( mhf)mjg+n u4 jjaical value in the 0jg ua5f0 e4)7)/x(cj4xljmf;r gpaconh+m j 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?    $m/s$

  An object is thrown upwar:gs yt,a,(lvp px ,.ygd with a speed of 14 m/s on the surface of planet X wher,:gx( g,tyvyasp .pl ,e the acceleration due to gravity is $3.5 \; m/s^2$. What is the speed of the object after 8.0 s?

  In Fig. below, what is the velocity at t = 1.9 wqxzxb(j( f ooy. tvq fb9dq9:ka3550 s?

  If the velocity versus time graph of an object is a horizontal line, the 2e zqt8tg2w;0a a.t 30uerjayobject igtr3t2jea w.t0y2;8uea0a zq s

  A ball is thrown straight upfm 21 o9n9fotp+qfm.q with a speed of 36.0 m/s. How long does it take to return tqf1m9q +m9f ont 2fpo.o its starting point?

  In Fig. below, what is the average velocity from 0 to 6.-pt )79l)( daivfnvl )ftxs,t0 s?

  In Fig. below, what is the acceler c ya.81unj4xyation at 1.0 s?

  Suppose a ball is thrown straight up. Make a statement about mql+ t3 8s.s)onm,ju3 nsoo;e(spxl /bzra+*the velocity and the acceleration when th ,lnr(qo)* s.o +xb8e3m op jmzl3ssn;su/at+e ball reaches the highest point.

  The slope of a position versus /ian:688 ol awbwmsy(na 2lai eg73h6 time graph gives

  An object is thrown upward with a speed of 12 m/s on the surface ryrnc (7s-(gds n12mz of planet X where the accsg2crz( n(y nr1dm 7-seleration due to gravity is $1.5 \; m/s^2$. What is the maximum height reached by the object?

  Human reaction time is usually greater t:csm+4.qv0u6g /iylgg up;i than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can yo 4l icmiu0u6t.yv ;gsg/g q:p+u expect the ruler to fall before you catch it?

  Ball A is dropped from,p(5j hkazh 2e the top of a building. One second later, ball B is dropped from the same bu aep5j2( zhkh,ilding. As time progresses, the difference in their speeds

  A ball is thrown straight up, reaches a maximum height, then fa, iqzy9puc5hd f( v4qd,jzq.: lls to its initial height. Make a statement about the direction of the veloc,du( fh4 95jdp.,qz yc :qzqviity and acceleration as the ball is coming down.

  Ball A is dropped from the top of a .ib*p5;tmcndpf e+ ;tbuilding. One second later, ball B is dropped from the same building. As time progresses, th ;ntepcit5md*;b.p f +e distance between them

  The slope of a velocity versu9cy tn,c8 5kdta; 3llts time graph gives

  A brick is dropped from the top of a building. A second brick is thrown4c*j7hnfh x-b ed6v 8c straight down from the same building. They are released at the same time. Neglect air resistanbe64fnj d8 -7x*vhhc cce. Compare the accelerations of the two bricks.

  An object is moving with constant non-zero va: p:e2 egg/bzelocity in the +x axis. The position versus :ge/a:gzp b2etime graph of this object is

  In Fig. below, what isq(ill(p.lf5 p the velocity at t = 2.5 s?

  Two objects are thrown from the top of a tall building. One p84 0rengm 7mais thrown up, and the other is thrown down, both with trpmn84a70 mgehe same initial speed. What are their speeds when they hit the street?

  In Fig. below, what is the ac2 y//kwjygy(jg m- jlr*2.2oiiukb 4 qceleration at 3.0 s?

  An object is thrown upward with a speed of1hbxgj,-hdqk*a k.s , 12 m/s on the surface of planet X where the acceleration due to gravix*,hk as.q-k, gbhj1dty is $1.5 \; m/s^2$. How long does it take for the object to reach the maximum height?

  An object is moving with constant non-zero w,wm2oev)a o k umx:,0velocity in the +x axis. The velocity versus time graph of thisme o0,w )u,2ov:wxakm object is

  In Fig. below, what is the average acceleration from 0 to 8.0 skq*5 uvqlir.i 5l 9/5p8dgv js?

  If the velocity versus time graph of an object is a straight line makingd 8u:0l: vcvhivq 2nx+ an angle of 30 de lhiv:8v q x+0:2unvcdgrees with the time axis, the object is

  An object is moving with constant non-zero accel 6 h;a/nfxkd(8i)j9tz5c6h l;s dt ubveration in the +x axis. The velocity versus time graph of5n/tu (zkf i8s); 9jdha6t ;bhdcvx6l this object is

  A bullet shot straight up returns to its startin,8 c s1hdsze/; ea e .:aiot8dbg1wsq/g point in 17 s. What is the initisqc8es. a /i/ :zodtgea;we,1h 81b dsal speed of the bullet?

  In Fig. below, what is the avici8eb vp kl1*f/k .)n gkr nmz7/5f/herage acceleration from 0 to 5.0 s?

  When an object is released from rest and*or(w yoq73vsn8 y6jspe u; .q falls in the absence of friction, which of the following is true concernyqqs6p *.(;o3 r8v 7w eounysjing its motion?

  In Fig. below, what is the velocity at7-t2ffd, wu3 csktt7x t = 5.5 s?

  If the position versus6vmgy8 h+yl9 xp 0 tu0qy6pbw2 time graph of an object is a vertical line, the object is60y p9+vyl2xmgpbw u8y qh t06

  A ball is thrown vertically up e5s(s*l9mc;olafpc0 ward with a speed v. An identical second ball is thrown upward with a speed 2v (twice as fast). What ifm(9cpsel5; 0 ls oa*cs 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 first ball?)

  A foul ball is hit straig2 7i/bf. hw/-czl5bl bee*akkht up into the air with a speed of 35.0 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 6 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 6.0 m above the point of contact a second time.  (数值)  $s$

  Suppose a skydiver jumps from a c d13tq);(ujecz kex8gf e:f-high-flying plane. What is her acceleration when she she reaches termi 1zgf 3fkj8:x;eced-t c(ueq)nal velocity?

  If the position versus time graph of an obtb v:na w*o8x.ject is a horizontal line, the object isbt* wx:.8 anov

  An object is thrown upward with a speed of 15 m/s on the surface of plawl2;mee:nv k yx4a c71net X where the acceleration e2e ;ly7c4m1wvnxka :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(q2xx7(aw cf8*g gn/ 6sa ybas aw9r/ehe displacement from 0 to 8.0 s?

  Suppose a ball is thrown straight up, reaches a maximu1jdjoyx*))a z9opae mdtt* :0m height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball1z:*p90jxy) *dj a tamedot)o is going up.

  In Fig. below, what is the veloc:tef y5eosym7,g-w4a su 5ae.ity at t = 4.0 s?

  In Fig. below, what is the average velocity from 0 to 4.0 s:ic5c f73 ti lla*-qqn?

  A ball is thrown upwagr0 sdy2enj 8+rd at a velocity of 19.6 m/s. What is its velocity after 3.00 s?+r0dsnyj2g8e

  Suppose a ball is thrown straight up. What is its acceleration just before it *geiyi2 ab/g+; ( ujwsreag *iabg2y s/+wj ui;e(ches its highest point?

  A ball is thrown downward from the a t1./kafdax5 top of a building with an initial speed of 10 m1d5a. xafka/t/s. It strikes the ground after 1.3 s. How high is the building?

  Suppose a ball is thrown downward in the absence of air resisllop. ivw*. +utance. Make a statemenio vp.u+ll w*.t concerning its acceleration.

  The area under a curve in a velocity versus tq onfgcx6/**e r8 *lxlime graph gives

  An object is moving with constant non-zero acceleration in the +x axi-); tubhm ax*- * e+0cfffrhnds. The posi re -*fth0d;xnfham+c-ufb*)tion versus time graph of this object is

  The area under a curve in a2paup5.hwgdx9o 6z2xigiucp 7 :8tx ;yg-f8b n acceleration versus time graph gives

  When an object is released from rest and falls in the absence of friction, whf(u f4td *gj,o : *zkyv+wbpdr c7cm, c:ve3,jich of the folc *ccuy wje*7b,3v+jrgp,fm :(4zv d ,f kdto:lowing is true concerning its motion?