An object is moring in a negative direction with a negative acceleration, for example an object dropped out a vindow. What does it mean that both velocity and acceleration are negative?
A)
The object is speeding up
8)
The object is slaving down
9
The object will eventually stop
The object must be moving downward.

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The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

What is the gravitational attraction between a dating couple whose centers of mass are 0.630 m apart if the boy weighs 715 n and the girl weighs 465 n?