Sorin hits a cricket ball straight up into the air. After 1.5 s, the ball is falling straight down with a speed of m
6.5 -. We want to find the initial vertical velocity of the ball. We can ignore air resistance.
S

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

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.