During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. which had the greatest displacement during the time period from the hitting of the ball to its catching

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up