Recent content by s.dyseman

Thank you very much, I found the answer at 20.4 m! You were a big help. The incorrect sign was a glaring error, how did I miss that?

Homework Statement A 15.0kg stone slides down a snow-covered hill, leaving point A with a speed of 12.0m/s . There is no friction on the hill between points A and B, but there is friction on the level ground at the bottom of the hill, between B and the wall. After entering the rough...

Ah, I got it! Subtract that value from KE-initial and set it equal to the KE equation. V=7.21. Thank you guys so much!

Or should I be subtracting that value from the initial KE?

Should I be getting a negative value after integrating from 0 to 9? I'm getting -35.1. This would lead to a negative velocity at x=9, correct? Is that possible?

So just to clarify, the delta would not be from 0 to 9, but from the -x value where v=0 to 9, right? And yes, a big thanks to both you and Chet. :biggrin:

Also, due to the initial velocity, do we not need to find where the velocity of the object is equal to zero (which would be in the -x direction), so that we can integrate from that -x value to x=9?

So, if I understand, I can simply integrate the force equation given from 0 to 9 to find the total work done. From what I gather, the change in total energy must equal the change in kinetic energy from 0 to 9, so we can just set the total work = (1/2)mv^2 to find the velocity at x=9?

Homework Statement A net force along the x-axis that has x-component Fx=−12.0N+(0.300N/m2)x2 is applied to a 3.20kg object that is initially at the origin and moving in the -x-direction with a speed of 8.60m/s What is the speed of the object when it reaches the point x = 9.00m ...

First off, thanks for the assistance. So there is an error in the maximum acceleration I found? Should I have divided by only the mass of block A rather than the mass of A + B? If so, I get a=4.6m/s^2. I found an error I made when inputting the equation for Mc in the calculator, thanks...

Homework Statement Block B, with mass 5.00 kg, rests on block A, with mass 8.00 kg, which in turn is on a horizontal tabletop. There is no friction between block A and the tabletop, but the coefficient of static friction between block A and block B is 0.750. A light string attached to block A...

Ah, so I just needed to subtract the height of the roof... Simple detail I missed... Thank you!

Homework Statement A man stands on the roof of a building of height 14.6m and throws a rock with a velocity of magnitude 30.8m/s at an angle of 33.2∘ above the horizontal. You can ignore air resistance. Calculate the maximum height above the roof reached by the rock. Homework Equations...

Thanks everyone! I was able to correctly answer the problem after you pointed out my mistake.Thanks again

Hello! I'd like to thank everyone in advance for any help I receive! Homework Statement In January 2006, astronomers reported the discovery of a planet comparable in size to the Earth orbiting another star and having a mass of about 5.5 times the Earth's mass. It is believed to consist...