How many times is going by on the graph?

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

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

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)