http://upload.lsforum.net/users/public/q13106YF-04-34u96.jpg
A 3.28 kg cat moves in a straight line (the x-axis). the figure (Figure 1) shows
a graph of the x-component of this cat's velocity as a function of time.
What is the magnitude of the net force at time 8.5s ?
Net force
2012-10-10 7:31 am
回答 (1)
2012-10-10 5:56 pm
✔ 最佳答案
During t = 6 s to t = 10 s, the cat is under a constant acceleration a, which is given by,a = (12 - 8)/(10 - 6) m/s^2 = 1 m/s^2
Use: net-force = mass x acceleration
hence, net-force = 3.28 x 1 N = 3.28 N
Therefore, at 8.5 s, the net force is 3.28 N
收錄日期: 2021-04-29 17:46:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121009000051KK00604