Two trucks parked at a loading dock exert a gravitational force, F, on each other. The cargo from each truck is unloaded so that
the mass of each truck becomes one-half of its original value.
Which of the following represents the present gravitational
force between the trucks?

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.