Physics Test Help. (teacher recommended internet)

[xsrewop27x]

No these are my answers .. are they right?
1)75m

2)2kg

3)96.5N

4)2 m/s2

5)6.18N

Do you all agree that I got the right answers?

 

[chroot]

xsrewop27x,

Please don't crosspost, and please don't ask us to do your homework for you. Since you already have an active thread there in Homework Help, I'm closing this one.

- Warren

 

[cepheid]

Let's look at # 1:

At first (using Newton's 2nd Law),

a1 = F/m1 = 3.0m/s^2

F = 3m1

And then,

a2 = F/m2 = 2.0m/s^2
F = 2m2

but we know that m2 = m1 + 1, so 2m2 = 2(m1 + 1) = 2m1 + 2

F = 3m1 = 2m1 + 2 (solve for m1)

m1 = 2kg

Pretty simple, actually.

 

[quantumdude]

This thread is going to look a little screwy because It is actually 4 identical threads merged (by me) into a single thread.

xsrewop27x:

First, it is considered spamming to post identical threads more than once. Second, while we are happy to help you with your homework, we will not do it for you. That said, we require that you show how you started each problem, and we will help you with where you get stuck. Give each one a try--they are not very difficult.

Others:

Please stop posting complete solutions.

Thanks,