Physics test review help?
2020-12-16 9:29 am
I’m so confused. I took tutoring and everything but still I’m not sure if I got right answers. Plz help me on 54
回答 (1)
2020-12-16 5:20 pm
54
a ; t' = t/2 = 4.4/2 = 2.2 sec
b ; a = g = -9.8 m/sec^2
c ; same as point b
d ; same as b and c
e ; zero , as it is about reversing motion
f ; Vo + g*t' = 0
Vo = -g*t = 9.806*2.2 = 21.6 m/sec
g ; V = -Vo = -21.6 m/sec
a ; t' = t/2 = 4.4/2 = 2.2 sec
b ; a = g = -9.8 m/sec^2
c ; same as point b
d ; same as b and c
e ; zero , as it is about reversing motion
f ; Vo + g*t' = 0
Vo = -g*t = 9.806*2.2 = 21.6 m/sec
g ; V = -Vo = -21.6 m/sec
收錄日期: 2021-04-24 08:09:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20201216012949AAweMb9