a force of 250N is applied to an object that accelerates at a rate of 5 m/s^2. what is the mass of the object.

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

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.

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car