are muscles connected to the skeleton. 1.) Smooth muscles
2.) Skeletal muscles
3.) Strong muscles
4.) Cardiac muscles

Skeletal Muscles

Explanation:

Skeletal muscles are attached to the skeleton by tough connective tissues called tendons

50 inches should be the resultant vector

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