#40? (Algebra help)?
回答 (1)
2015-08-31 4:13 am
a) h(t) = 8t*sqrt(5)-0.5gt^2
b) 5 = 8t*sqrt(5)-16t^2
16t^2-8t*sqrt(5)+5 = 0
Quadratic formula
t = [8sqrt(5)+/-sqrt(0)]/32
t = 0.56 seconds
b) 5 = 8t*sqrt(5)-16t^2
16t^2-8t*sqrt(5)+5 = 0
Quadratic formula
t = [8sqrt(5)+/-sqrt(0)]/32
t = 0.56 seconds
收錄日期: 2021-04-21 13:52:26
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150830195836AAjkhn1