On Earth and without air, 9.81 meters/second2 . (rounded)
The number is different if the object is drooped through air,
or on the moon, or on a different planet.
An object will accelerate in the direction of the net force acting on that object.
No, it is not harder to accelerate a moving object. The initial motion of the object does not affect the force required to accelerate it further. The force required to accelerate an object depends on its mass and the desired acceleration.
To accelerate an object twice as fast, you would need to exert twice the force. This is because force is directly proportional to acceleration, as defined by Newton's second law, F=ma. So if you double the acceleration, you must double the force.
Accelerate, motion is generated by applying force to mass.
... to accelerate.... to accelerate.... to accelerate.... to accelerate.
Velocity must be changing in order for an object to accelerate or decelerate.
An object will accelerate in the direction of the net force acting upon it. If multiple forces are acting on the object, the net force is the vector sum of all the individual forces, and the object will accelerate in the direction of this net force.
an object can accelerate both up and down
When the forces on an object are unbalanced, the object will accelerate in the direction of the net force.
... then it won't accelerate.... then it won't accelerate.... then it won't accelerate.... then it won't accelerate.
... then it won't accelerate.... then it won't accelerate.... then it won't accelerate.... then it won't accelerate.
Yes. If there is an unbalanced force on an object, the object will always accelerate in the direction of the force.