2. A car has a momentum of 10,000 kg x m/s and has a mass of 800kg what's the car velocity

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Which accounts for an increase in the temperature of a gas that is kept a constant volume

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.