The object that is moving at a constant speed will slow down. Its new velocity will be determined by the original constant speed along with the new combined mass of the moving object and the additional "large mass."
It slows to a rest and then starts moving in the opposite direction at constant acceleration in that direction.
Force increases.
Directly below where it was dropped (assuming the storage compartment is enclosed, so the air inside is moving with the truck).
A truck moving at constant velocity inside the storage compartment a rock is dropped from the midpoint of the ceiling and strikes the floor below the rock hits the floor Read more:
F=ma. F=0, a=0. The object is either moving a constant velocity or not moving at all.
Speed - is something moving at a constant rate. Acceleration is an increase of the rate an object is moving.
Velocity is Speed in a given direction. Moving at constant velocity is equivalent to say moving with a constant speed in a specified direction. So, moving at constant velocity implicitly means moving with constant speed.
When both sides are pulling with equal force, the object is either moving at a constant speed or it is stationary (not moving) :)
If there is no net force, the object will stay at rest if it was at rest, or continue moving - at constant velocity - if it was already moving.
It continues to move.
A car moving at constant speed in a straight line is also moving at constant velocity.
When acceleration is zero, then the object is moving in a straight line with constant speed. (That's the effective meaning of constant velocity.)