Is it easier to push or pull something up a ramp

Blank liquids and gases exert a buoyant force on objects placed in them

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.

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr