In Fig. below, what is the velocity at t = 5j ri3blvqws8-;:nn* c .5 s?

  Two objects are thrown from the top of a tzpu+)hy7jv 9 qall building. One is thrown up, and the other is thrown down, both with the same initial speed. Wha9z qy p)vujh7+t are their speeds when they hit the street?

  A ball is thrown vertically+dnjpvq. tu4: 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 thjtq+pv4 :n ud.e second ball to that of the first ball? (How many times higher does the second ball go than the first ball?)

  A brick is dropped from the m6zzkrd:)wf - o 9u(rztop of a building. A second brick is thrown straight down from the same building. They are released at the same time. Neglect air resistance. Cor (6)kfuzmd zr-zo9w:mpare the accelerations of the two bricks.

  Suppose a ball is thrown straight up, rea:dc :8;t/ mro g/:ogdgp9euauches a maximum height, then falls to its initial height. Make a statementu r:uop dg/oag:d 9g/tm;8ce: about the direction of the velocity and acceleration as the ball is going up.

  A bullet shot straight up returns to its starting point in 5 s. What is ttxn2j(er2kx tul-e cn )*a5k3he initial speed of t j3nxc)2e(-rkn u t2axk5*elthe bullet?

  An object is moving with cons)ej-w) nm,e);v5 nd asog pg7obz2 0botant non-zero velocity in the +x axis. The velocity versus time graph of this object -oj os05v) g;o,ewmg2zd))e7 anbpn bis

  An object is thrown upward with a speed of 12 m/s on the surfacek8d em3b yz99r* xxwi4 of planet X where the accelewd*3i 4mez8 ry9xbxk9 ration due to gravity is $1.5 \; m/s^2$. What is the maximum height reached by the object?

  A ball is thrown straight up, reaches a maximum height, then falls to its initiunr,(uxbq1 q. al height. Make a statement about the direct b(qnqu 1,u.rxion of the velocity and acceleration as the ball is coming down.

  In Fig. below, what is to0 ;yz6 d:67f 7fnlscbr -je lj1y9moxhe acceleration at 1.0 s?

  In Fig. below, what is the average velocinb:y.np3xd)dv 4 wd7,+fvl pgty from 0 to 6.0 s?

  An object is moving with constant non-zero velocity in the +x axis. Theq z6.ut pslf4eov2ec n53-l )n position versus time graph of this obje v32 l-cpno.qse ft)64zu ln5ect is

  In Fig. below, what is the)w k0in kpn 8+*a3bcaa velocity at t = 1.0 s?

  In Fig. below, what is the acc4o,n5u.1 z 9rxr uxrbweleration at 3.0 s?

  If the velocity versus time graph of an object is a ms yhi , ,.2emmee9a 4o.lbur/straight line making an angle ofa4 urm9me,.boye. ei2l,s hm/ 30 degrees with the time axis, the object is

  The slope of a velocity vers52*xp/ gqn4rvro2 xabnrik xtx /87 ;aus time graph gives

  The area under a curve in accqpvg8ej +9 4 velocity versus time graph gives

  When an object is released frkyk7x79h 5 fes)xy8dx om rest and falls in the absence of friction, which of t7 97y)kyxhxsk8e xd f5he following is true concerning its motion?

  Ball A is dropped from the top of a buijy 27 iubm.l;rlding. One second later, ball B is dropped from the same building. As timl.7u2yj; ri mbe progresses, the difference in their speeds

  Suppose a ball is thrown sr 4mgm0ub +5bfc2. vvhtraight up. What is its acceleration just before it reaches its highest po+ b chrb2g4.mu mfv0v5int?

  If the position versus time graph of an obj ernec79ra ,y(pyh6k l,.(j iqect is a vertical line, the object is ry ,y6 jecq(,lhrp9.ie7 ka(n

  Human reaction time is usually greas d2 vl2+ta;ul0x)vroter than 0.10 s. If your friend holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fall before you txlrv a0u) l2vo ds;+2catch it?

  A ball is thrown straight up with a speed of 30 m/s. (only fillckck/i.axok5d 0(3vks ly /u0 in numerical valuelk /ac 53k.c ydv( u0xk/oksi0 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?    $m/s$

  If the velocity versus time graph of an objec zzjbt7xg1:rm.k q+j :t is a horizontal line, the object itk7+mbjjqg1:.:rx z zs

  A foul ball is hit strai4 .gz0x0ol /q9yje6w-dg ebdsght up into the air with a speed of 25.2 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 7 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 7.0 m above the point of contact a second time.  (数值)  $s$

  In Fig. below, what is the disim a 3wcb/gi(-s kcpqk2r 5;cd)/nj b2placement from 0 to 8.0 s?

  Suppose a skydiver jumps from adoi0jo7 r w uzfl)d462 high-flying plane. What is her acceleration when she she r2dzfoi 7l4j0od6 wru)eaches terminal velocity?

  A ball is thrown straight up with a speed of 36.0 m/s. How lo 3jwf e+ru:.d ol61mp pg,kc.3mr)inn+ grv2hng does it take to return to its startirnp v+ rk,1.l2n rjf m6.3gp +d:owci)m3ugehng point?

  Suppose a ball is thrown downt*n gyx6jrr3)j5yc x6ward in the absence of air resistance. Make a statement concerning i)c 5*y6ry6gr3jx x ntjts acceleration.

  In Fig. below, what is the average veloztws.tfu *9o73 cq6lz city from 0 to 4.0 s?

  A ball is thrown downward from the top of a building with an initial speedrs36o wmot:v ) of 22 m/s. It strikes the ground after 4.6 sw:o3t) m r6ovs. How high is the building?

  An object is thrown upward with uh*qp/a/z wau1 z 9x/ja speed of 15 m/s on the surface of planet X where the acceleration xjqa h/p//w* zuzau91 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 upward at a velocity of 19.6 m/s. W(oc myn vb l3 phq/v,1h8sga44hat is its velocity after 3.00 s? c4bogq(m/,lsavph41n83 vh y

  The area under a curve i i/ne7*yqcfib 8z-:ran an acceleration versus time graph gives

  In Fig. below, what is the velocity at t ju3 tod(vge25 d8j 0zq= 2.5 s?

  Ball A is dropped from the towr-irjg hl1 74p of a building. One second later, ball B is dropped from the same building. As time progresses, the distanceg-l 41rwi jr7h between them

  Suppose a ball is thrown straight up. Make a state v/c/j3n9irtnr 3lk v0ment about the velocity and the ackncr/0vn3/ i 9t3ljrvceleration when the ball reaches the highest point.

  The slope of a position versus time g ;o-vyaev6eb29v 0amgraph gives

  When an object is released from rest and falls in the absence of friction, which 5hk) 5u 0, :orrxl)ygt-egh8iliam.o of theg)hka)ot- oi,rriu .g:y0lxml h 8e5 5 following is true concerning its motion?

  In Fig. below, what is the veqjkcs8* g ;l+(by ac,rlocity at t = 4.0 s?

  An object is thrown upz: gbi79svff2p hyp 41ward with a speed of 12 m/s on the surface of planet X where the accelyif1shb2 97g: vp4z pferation due to gravity is $1.5 \; m/s^2$. How long does it take for the object to reach the maximum height?

  An object is moving wdvs-m3+1qw- (myi wb sith constant non-zero acceleration in the +x axis. The velocity versus time graph of this object ismyviwm- d3 b+wq s-1s(

  In Fig. below, what is the average acceleration from 0 to 8.fqy3oi cb ;uhp0hv :*70 s?

  An object is thrown upward with a speed of 14 m/s on the surface of platrecpm)hy g-o7w g2 ds5q)..k net X where the acceleration due tk qroph.) mgwes72 dgt- c)y.5o gravity is $3.5 \; m/s^2$. What is the speed of the object after 8.0 s?

  If the position versus time graph of an object is a horizontal line, the object(w*4)uqe l60dzm3fy yfnmc y* is*3yce)(m qd0lufm*n4yf z6 wy

  In Fig. below, what is the average acceleration from 0bvcop5o s 615nwlnt2zz, 2wh3 to 5.0 s?

  An object is moving with c:1f 1zlr wn4joonstant non-zero acceleration in the +x axis. The position versus time graph of this obje:zo4n w11f rjlct is