Two cars are driving toward each other at the same speed on a straight road. If they both turn around and drive at the same speed as before in the opposite direction, how will their velocities change? Neither car’s velocity will change.
The velocity of each car will change sign.
The velocity of the first car will change.
The velocity of the second car will change.

I'm pretty sure its B

Explanation:

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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

the force on the thing and the distance the force moves the thing