While riding his bike, Riley was able to travel 10 km from his house. He began his journey at the end of his driveway and rode
up a hill for 3 blocks before making a right-hand turn. He
continued for 4.8 km before turning around and returning
home. The entire trip took Riley 25 minutes. Which of the
following correctly describes the average speed of his bike ride?

Acurve connects the data points that are plotted. (physical science chapter 11 motion)

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

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.