Una grúa levanta una caja que pesa 400 (N) con una velocidad constante de 1 (m/s). ¿Cuál es la fuerza que tiene que ejercer la grúa para levantar esta misma caja con una velocidad constante de 3 (m/s)?

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

just took the test its not "d"