Recent content by skp123

[PLAIN]http://img191.imageshack.us/img191/9901/kokoj.jpg And now what ? Maybe I needto use this formula S=a*b*cos45

Homework Statement A bird flies 100m due east from a tree, then 200m northwest (that is 45° north of west). What is the bird’s net displacement? Homework Equations The Attempt at a Solution I am looking for the formula , which solve this task. We need to use vectors ,but I...

Plese people. I need a little help.

Homework Statement Assuming that the force F acting on a 2 kg box, as it passes horizontally through a channel (see Fig. a), varies with time in the manner shown in Fig. b, determine the maximum force F0, applied to the box. The velocity of the box reaches 5 m/s when t = 8 s. Assume that...

Can anyone give me a little hint ?

Homework Statement The block moves to the left with a constant velocity v. a)determine the distance x as a function of Q . b)determine the Angular velocity as a function of Q c)determine the Angular acceleration as a function of Qhttp://img98.imageshack.us/img98/3691/16293179.jpg Homework...

Ok. I think i don't know this formula . Thank you very much

OK, but where this formula come from. Whats the origin formula. Sorry for my questions , but i just can't get it.

OK.So . Can I use this formila t=s/v ? If yes -> t=\sqrt{5} / 10 . And not let's find distance L . S=vt -> 2\sqrt{5} * \sqrt{5}/10 = 1. Therefore distance L= 1

OK. So t=S/v -> t=5 / 2\sqrt{5} -> t= \sqrt{5}/2 . But this is the time from A to B. Now what should i do ?

Ok, but first we need to find this distance L. And I can't find it

No, I can't. Sorry but I need more help. I am trying to understand it but i can't. Now we need to find vy - right ? We have v=2\sqrt{5} , we have the angle -> vy = vsin(30) -> vy = \sqrt{5} .

Thank you. Now b -> we know that a=vdv/ds -> integrate and we find v=2\sqrt{5}. Now i have problems finding the distance L. If the angle between L and C is also 30 degree i can find it but i don't think it is 30 degree. And i also don't think that BC is a straight line. So can you help me...

Homework Statement A 20 kg car slides 5 m down the smooth(frictionless) ramp with an initial celocity 0. a) Determine the acceleration when the car moves from A to B. b)Determine the velocity of the car in point B. c)Determine the point (distance L) where it strikes the ground at C. d) How...

Yes. Thank you. And one last question. I need to determine the position of the car after 3 seconds. Can I use this formula -> S=S0 + v0t + 1/2at2