A can of corn is thrown with an initial velocity of 2.4m/s from the top of a 23.3m balcony. A. What is the final velocity of the can just before its impact
B. If you were trying to avoid being hit by the can upon impact, how many seconds would you have from initial throw to avoid the can.
Please help thanks in advance.

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

Work = force × a. work b. energy c. distance d. momentum

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.