# Search results

1. ### Free fall equations Sky diver Felix need some help please

hi .. any body have any idea :( by the way this is not for home work , it just a question pop up to me and i want to solve it , but it has been moved here :)
2. ### Free fall equations Sky diver Felix need some help please

free fall equations ...Sky diver Felix :) need some help please hi :) OK..i tried to use the equations below to evaluate the distance or the time at which felix will reach the speed of sound ...but i failed ..i need some help: here what i did: first i neglect the air resistance , but the...
3. ### Why classics assumed that the force constant in two different references frames?

thank u nasu ...i v got it mathematically ...but not logically :) i know i have to train my brain to imagine it .... have a nice day ^_^
4. ### Why classics assumed that the force constant in two different references frames?

thanks andrien for the reply :) one more quastion plz: "v" in that equations is the frame speed what about the "a" for the body under the force ? this is what confuse me a=dv/dt v=x/t so v depend on x ! ... how "a" can be constant?
5. ### Why classics assumed that the force constant in two different references frames?

hi every one :) i need a small help please ... we have tow frames and tow observers , let suppose there is a force on an object in one of the frames , so from newton law: f=ma "a" depend on "x" distance which is not constant in the other frame , so why they assumed that it is constant...
6. ### I want to get prepared for master at homehelp please

thanks a lot intwo and everyone replied :)....have a great life :smile:
7. ### I want to get prepared for master at homehelp please

another question plz::smile: for a medium intelligent person but ready for hard work: how much time do you think it will take to get prepared? thanks again and have a nice day
8. ### I want to get prepared for master at homehelp please

thanks a lot for the links of the courses , i hope to take one like them :)
9. ### I want to get prepared for master at homehelp please

thank you so much physiker_192 for the link that was so helpful absolutely, it was my main obstacle i will spend more time on it :rolleyes: :) thanks again
10. ### I want to get prepared for master at homehelp please

Hello, :smile: I am a 37 years old with a BS in physics I decided to go for a Masters degree in Physics since it only takes about two years , i know it looks late but i love physics even though i wasn't so good in BS, and since i want to finish it good and fast i need someone to answer these...