Sebuah papan berbentuk kotak bermassa 2kg berada diatas meja setinggi 0,9 meter. papan berbentuk kotak tersebut memiliki energi potensial sebesar(g=10m/s) Pliss bantu kak

i think they are all correct

explanation:

they seem good

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