推 chick1227:看來我這個普物小老師當的還不夠盡責~囧 11/05 16:10
推 gerrychiu2:老魏 我 愛 你 11/05 16:45
→ justmissu:沒人來拿新的講義我充公好了XD 11/05 16:58
推 lunar0930:老魏 幹的好 11/06 16:40
話說今天早上為了拿普物的講義還有題目殺去一中街找學妹
害我都沒睡飽說~"~
總之
剩下的普物講義已經印好啦
有重修普物的趕快找我拿唷
一本"20元"記得要給錢呀
還有講義有打星號的似乎是必考
題目上有勾的是老師出的題目
由於這次老師說出的題目跟講義會100%在期中考出現
尤其是題目連數字都不會改變
所以大家好好加油吧~^^
(趕快把計算過程跟答案交出來才是重點XD)
(學妹也想知道計算過程就大家幫忙一下嚕)
希望這次能夠high pass嚕
還有下面四題題目一定會出兩題考
所以大家算一下吧
這次考試聽說是全部計算
九題選八題出來寫
大致上就這樣嚕...一起加油吧XD
(話說順便賺p幣?)
7. Stationary Ball-Impulse
A cue stick strikes a stationary pool ball, with an average force of 50N over a time of 10 ms. If the ball has mass 0.20 kg, what speed does it have just after impact?
9. Average force of Bat
A 150 g baseball pitched at a speed of 40 m/s is hit straight back to the pitcher at a speed of 60 m/s. What is the magnitude of the average force on the ball from the bat if the bat is in contact with the ball for 5.0 ms?
17. Force and Impulse
The magnitude of an unbalanced force on a 10 kg object increase at a constant rate from zero to 50N in 4.0 s, causing the initially stationary object to move. What is the object’s speed at end of the 4.0 s?
22. Ball Strikes Wall
A 300 g ball with a speed of 6.0 m/s strikes a wall at an angle of and then rebounds with the same speed and angle. It’s in contact with the wall for 10 ms.
(a) What is the impulse on the ball form the wall?
(b) What is the average force on the wall from the ball?
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