Abaseball bat exerts an average force of 600. newtons east on a ball, imparting an impulse of
3.6 newton•seconds east to the ball. calculate the amount of time the baseball bat is in contact with
the ball. [show all work, including the equation and substitution with units.]

Why should seat belts not be mandatory quick plz

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

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.