Need quick!
what is velocity, because it describes both speed and direction?

a. the same as acceleration b. a vector
c. a force arrow
d. a magnitude

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

What object a collides with object b and bounces back its final momentum is?

Object a has a length of 3 cm, a width of 2 cm, and a height of 4 cm. object b is dropped into a graduated cylinder. it displaces 19 ml of water. the volume of object a is: a: greater than the volume of object b b: less than the volume of object b c: equal to the volume of object b