Isaac wants to make s'mores. he holds a marshmallow on a metal skewer over a fire. a few seconds later, the marshmallow is cooked and the skewer feels warm. what most likely happened? ]
the fire heated the surrounding air, which cooked the marshmallow.
the heat generated from the marshmallow flowed in the form of thermal energy to the skewer and fire.
the heat from the skewer cooked the marshmallow.
thermal energy in the form of heat moved from the fire to the skewer and marshmallow.

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

Ineed the answers for these promblems i have

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.