I.S. Question

Hugo

When a student throws a ball up, it loses
A. Kinetic energy
B. Potential energy
C. Heat energy
D. Chemical energy

Which one is correct?

rogergeot

A. (I think. ) You should ask some other guys as I do not study science.

細薯

Originally posted by rogergeot at 2004-4-19 09:20 PM:
A. (I think. ) You should ask some other guys as I do not study science.

B ar~~be coz origanally it have many potential energy to be dropped to the floor...but u throw it to the opposite direction of floor.......so lose potential energy.......one thing to say.....this question study at form2 ga bo......I S is ALL ppl have to study ga bo.....do not study science also must study I.S.....

rogergeot

First of all, I do not like science. And secondly, I am weak at Science. This is why I do not prefer people asking me science questions.

霏

Originally posted by smallpotato226 at 2004-4-19 09:35 PM:
B ar~~be coz origanally it have many potential energy to be dropped to the floor...but u throw it to the opposite direction of floor.......so lose potential energy.......one thing to say.....this q ...

ｎｏ
Ｐｏｔｅｎｔｉａｌ　Ｅｎｅｒｇｙ　係ｓｔｏｒｅｄ　ａｔ　ａ　ｈｉｇｈ　ｐｏｉｓｔｉｏｎ〔所以Ｐ．Ｅ．係ｇａｉｎｓ唔係ｌｏｓｅｓ〕
Ｂｙ　ｃｏｎｓｅｒｖａｔｉｏｎ　ｏｆ　Ｅｎｅｒｇｙ（唔使理），Ｋｉｎｅｔｉｃ　Ｅｎｅｒｇｙ會減少ｉｆ　ｐｏｔｅｎｔｉａｌ　Ｅｎｅｒｇｙ　増加

Ｓｏ　Ａ

細薯

Originally posted by 幻將 at 2004-4-19 09:56 PM:
ｎｏ
Ｐｏｔｅｎｔｉａｌ　Ｅｎｅｒｇｙ　係ｓｔｏｒｅｄ　ａｔ　ａ　ｈｉｇｈ　ｐｏｉｓｔｉｏｎ〔所以Ｐ．Ｅ．係ｇａｉｎｓ唔係ｌｏｓｅｓ〕
Ｂｙ　ｃｏｎｓｅｒｖａｔｉｏｎ　ｏｆ　Ｅｎｅｒｇｙ（唔使理）， ...

相對ga.......i maybe forgotten the things that have learnt last year......(form2 I.S.)

oscar

補充:
這個motion的energy change係Kinetic Energy---&gtotential Energy，話明轉緊個energy，所以前一個energy decreases，下一個energy先會出現。
如果fall down既時候，potentail energy則decreases，kinetic energy增加直至到達ground。

這是Form1 Integrated Science，不是Form2的~可能改左版~(我今年Form2，上年先教完黎~)

細薯

Originally posted by oscar at 2004-4-19 11:03 PM:
補充:
這個motion的energy change係Kinetic Energy---&gtotential Energy，話明轉緊個energy，所以前一個energy decreases，下一個energy先會出現。
如果fall down既時候，potentail energy則decreases，kine ...

sorry~~弄亂了.......

小卡

B. Potential energy
當你吹脹氣球o個陣時,你作緊既動作係動能,而氣球表面是勢能。當你放開既時候,姐係由動能轉勢能、所以應該就係勢力.我唔sure ga.....

rogergeot

Originally posted by 鷹宮小卡 at 2004-4-22 09:32 PM:
B. Potential energy
當你吹脹氣球o個陣時,你作緊既動作係動能,而氣球表面是勢能。當你放開既時候,姐係由動能轉勢能、所以應該就係勢力.我唔sure ga.....

I think you have misinterpeted the question. You should read carefully what Hugo has said.