Recent content by JB83

I am stuck on the first part of this question. I thought that I could add the Inertias for child 1 + child 2 + board and that would give me the answer. I used I=mr^2 for the children with the r being L/2 and 1/12*(mass)*(width^2 + length^2). as the I for the board. However I am...

Thank you so so much. I got it, and I still feel kinda dumb.. but you were right I need to not limit myself to the equations that are in the chapter that the homework is from. Thanks again

Ok I feel somewhat silly, and I know you are trying your best to explain it to me, but I have no idea what you are trying to lead me to do. Average speed is distance/change in time... I don't know what to do. Thank you for your help though.

Determine for each of the following statements whether it is always true or can be false. Two objects of different masses but moving at the same velocity have different momentum. -this should be true because p=mv and if there are different v then the p should be different. Kinetic...

so if delta t = distance/ave speed... delta t = 0.630/10. Using that in the J= ave. Force * delta t would be ave Force = J/delta t. If J= mvf-mvo. Since there is no final velocity J = -mvo. When I did these equations, the answer that I got was incorrect.

I can not work out how to do the first part of this problem. I know that I am supposed to use impulse to find the average force, but F*dt= J. and J= mvf-mvo. I don't know how to work this problem out without using time. The distance part of the equation is also throwing me off. I don't know...