La aceleración del punto A está definida por la relación 1.8sin, a kt = - donde a y t se expresan en 2 m / sy segundos, respectivamente, y k = 3 rad / s. Si se sabe que x = 0 y v = 0,6 m / s cuando t = 0, determine la velocidad y la posición del punto A cuando t = 0,5 s.

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?