john24d2003 發表於 17-4-2011 13:42:20

KE-Time graph問題

本帖最後由 john24d2003 於 18-4-2011 02:10 編輯

http://i1142.photobucket.com/albums/n608/1022888/DVC00144.jpg?t=1303018838
ans:b
有冇人可以解釋下個slope點解係曲線

kitson 發表於 18-4-2011 22:45:36

K.E=1/2mv^2.......(1)
v=gt ..................(2)
Put (2) into (1)
K.E=1/2m(gt)^2
K.E is direct proportion to t^2

john24d2003 發表於 18-4-2011 23:50:58

K.E=1/2mv^2.......(1)
v=gt ..................(2)
Put (2) into (1)
K.E=1/2m(gt)^2
K.E is direct propo ...
kitson 發表於 18-4-2011 22:45 http://www.nakuz.com/bbs/images/common/back.gif

2式有u

kitson 發表於 19-4-2011 18:26:06

2式有u
john24d2003 發表於 18-4-2011 23:50 http://www.nakuz.com/bbs/images/common/back.gif

Assume u=0

john24d2003 發表於 20-4-2011 00:53:49

Assume u=0
kitson 發表於 19-4-2011 18:26 http://www.nakuz.com/bbs/images/common/back.gif


    條問題唔係咁講= =
頁: [1]
查看完整版本: KE-Time graph問題