Jeff, Greg, Dan, and Ray all watched as the building across the street burned to the ground. THey kept waiting for the fire trucks to show up, even though none of them had called 911. In this case, the fact that none of the four friends phoned to report the fire illustrates .
a. social loafing. b. a self-fulfilling prophecy. c. group polarization. d. the bystander effect.

answer: d

explanation:

the boy's acceleration toward the girl is 2.08 m/s^2.

explanation:

according the newton's third law, the force causing the girl accelerate towards the boy will be me with equal counter-force causing the boy to accelerate towards the girl. these forces will be of equal magnitude and allows us to determine the boy's acceleration:

the boy's acceleration toward the girl is 2.08 m/s^2.

but it is sometime nessary to hit key points or subjects   but is sometimes to much reveiw if there was a way to slim down the redone work it would improve for every body.

the characters are fiction but they are based off of people that were reaky in that situation