Atrain is uniformly accelerated and passes successive kilometer stones with velocity of 18km/h and 36km/h respectively. caculate the velocity when it passes the third kilometer stone. also find the time taken for each of these two intervals of one kilometer.

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

What’s #16 asking me and how do i solve it?

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.