Which of the following is an example of a research topic that is too broad?
a. all about hip-hop music
b. hip-hop and the voice of outrage
c. rhyme and meter in hip-hop music
d. block parties and the origins of hip-hop

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?