× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
p
4
h
4
c
4
d
3
3
c
3
t
3
u
3
A
3
B
3
j
3
s
3
Home Q & A Board Science-Related Homework Help Physics
New Topic  
ilohim ilohim
wrote...
Posts: 63
Rep: 0 0
11 years ago
Given an acceleration say 2m/s2 and the object is from at rest (e.g car)

What is the velocity after 5s and 10s?

Question: Can this be solve without initial velocity? is the initial velocity is 0m/s since the object is from at rest. Please help
v = vo+at2.
Read 388 times
2 Replies

Related Topics

Replies
wrote...
#1
11 years ago
yes it says from rest so v0 is 0

so v=adeltat

so delta t is 5 seconds

just multiply it and its 10m/s
wrote...
#2
11 years ago
You yourself say that the object is "from at rest"(which I am assuming means starts from rest). The initial velocity will the 0, the at2 in your equation is actually an at, there is no squared term. Also, velocity and acceleration are vectors and you will have to use vector sign conventions to solve. The at rest, however, is only with respect to a frame of reference. Read Newton's First Law of motion.
http://en.wikipedia.org/wiki/Newton%27s_first_law#Newton.27s_first_law
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1064 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 880
  
 1016
  
 1189
Your Opinion
Which country would you like to visit for its food?
Votes: 261
Previous poll results: What percentage of nature vs. nurture dictates human intelligence?