What is most often the basis for racist behavior in the united states?

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

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?