Recent content by Klaz

Yes I followed his advice. I'll give it one more try using that. Thank you.

du/dt = 2v * -g = -2vg. 2nd derivative: du/dt = -2g * - g = 2g^2. Thank you. Can I ask one more question. What is wrong with my first attempt using the chain rule? Can i still get the same answer if I kept going with my solution?

If I apply chain rule. Let u=(v-gt)^1/2. Then : dv/dt = (u)^1/2 dv/dt = du/dt × dv/du = -g/2 (v-gt)^1/2. Am I on the right track? Then my next step would be to differentiate my answer again.

If Vy=v^2-gt then the first would be dv/dt = 2v-g.

Vertical velocity = v - at. I am still confuse on what to do with this equation. Since dv/dt = a.

First derivative would be 2v.

Homework Statement Show that for a projectile d^2 (v^2)/dt^2 = 2g^2 Homework EquationsThe Attempt at a Solution Since we are only dealing with the y component for this. 2nd derivative would be 2. But since gravity acts on it then d^2 (v^2)/dt^2 = 2g. I don't get how to get to 2g^2. Can someone...

Hello everyone. My name is Sam and I am an engineering student. I am very interested in studying physics. I am currently using physics by Halliday/Resnick/Krane. I have read good reviews on Feynman lectures but not really sure about its content. Is Feynman lectures a good supplement or is it too...

Ok. I am currently an engineering student and hoping to get into grad school in physics if I can't then engineering physics. Thanks for the replies.

So if I ever manage to understand the contents on the textbook I'm using. Is it safe to say that my knowledge of physics is close to an undergrad physics student?

Hi everyone. I just want to ask what exactly is intro to physics? Is that what undergrad physics students study or is it high school physics? I am currently studying the textbook physics by David Halliday.

I am currently a marine engineering student. I am really interested in studying physics and I hope this forum can help me.