2.) A Seahawks fan is driving 165 miles from Vancouver to Seattle. If the game starts in 3 hours, how fast will they have to drive to be there for kickoff?
4.) A train travels 120 km in 2 hours and 30 minutes. What is its average speed?

Truck traveling west on the highway experiences an acceleration to the east. what could be the cause of this acceleration

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.

In which of the following is positive work done by a person on a suitcase