An ore cart of mass 1200 kg is rolling at a speed of 10.8 m/s across a flat surface. A crane dumps ore into the cart from directly above it, after which the cart travels at 9.3 m/s. Whet mass of ore did the armed to the cart? Assume that frictional forces with the flat surface are negligible.
190 kg
92 kg
110 kg
240 kg

answer; /// the above statement is (true);

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

this would be about 43%