Solving a Problem with Velocity: Stuck and Need Help

[bob1352]

Homework Statement

Homework relating to work and velocity.

Relevant Equations

.5mv^2=KE, W = (change in x)F

I sent the work divided by two equal to the velocity part of the problem then got stuck.

 

[haruspex]

Homework Statement:: Homework relating to work and velocity to
Relevant Equations:: .5mv^2=KE, W = (change in x)F

I sent the work divided by two equal to the velocity part of the problem then got stuck.

Please post your attempt, per forum rules.

 

[Delta2]

To get you started, how is the work $W_D$ related to the speed V at the end of the distance D? Think of work energy theorem.
Similarly, how is the work $W_D/2$ related to the speed $V'$ (which is the speed that the box has when the work that has been done is $W_D/2$.)

 

[bob1352]

Please post your attempt, per forum rules.

Do you honestly think I went through the effort of creating an account and making a post without attempting the problem first? In the post I even said that I set the work divided 2 = to velocity part and got stuck. And somehow I got a strike on my account for getting stuck. My disappointment with this forum is immeasurable and my day in ruined. All I asked for was help, not answers, and I was left to rot like a corpse in the rain.

 

[haruspex]

Do you honestly think I went through the effort of creating an account and making a post without attempting the problem first? In the post I even said that I set the work divided 2 = to velocity part and got stuck. And somehow I got a strike on my account for getting stuck. My disappointment with this forum is immeasurable and my day in ruined. All I asked for was help, not answers, and I was left to rot like a corpse in the rain.

I am not able to help you if you do not post what you actually did. The outline in post #1 is much too vague. Did you really set velocity = work/2? I hope not. Did you get an answer of any sort as a result of what you did?

It seems such a waste to go through the effort of joining and making a post, then not supply enough info for anyone to help you.

Any "strike" on your account did not come from me.

 

[Delta2]

Do you honestly think I went through the effort of creating an account and making a post without attempting the problem first? In the post I even said that I set the work divided 2 = to velocity part and got stuck. And somehow I got a strike on my account for getting stuck. My disappointment with this forum is immeasurable and my day in ruined. All I asked for was help, not answers, and I was left to rot like a corpse in the rain.

You really have to provide us with more details of what exactly you did. We don't have telepathy , we are not inside your brain to know what you thought for this problem and what exactly you did.
We want to help you and not going to leave you like a corpse to rot in the rain, but you must show some effort and post a well detailed attempt at the solution.