Its speed, or direction, or both, change.
That's called "acceleration".
Velocity.
opposite and equal force against you.
Remember Newton's third law of motion! The object exerts a force that is of equal (the same) magnitude but in the opposite direction to what you applied to it
when an object changes its motion it is because a new force that is greater than the original force has been applied to the object and that object changes its motion unless the force is in the same direction as the original force, which would then imply that the object stays in the same direction of motion, but moves at a greater speed in that direction.
No the work done is still positive, the force exerted and the work done to exert that force is still the same. Its just that the other object is exerting more of a force on the object doing the work.
Direction
Velocity.
If you exert a force on an object in motion you will change its velocity, velocity being a vector quantity of speed and direction.
opposite and equal force against you.
Remember Newton's third law of motion! The object exerts a force that is of equal (the same) magnitude but in the opposite direction to what you applied to it
when an object changes its motion it is because a new force that is greater than the original force has been applied to the object and that object changes its motion unless the force is in the same direction as the original force, which would then imply that the object stays in the same direction of motion, but moves at a greater speed in that direction.
By accelerating a 1 kg object at a rate of 1 m/s^2, you exert a force of 1 N on the object.
The force would be the weight of the object.
When a force is acted on an object the motion changes. Newtons 2nd law of motion states: An object in motion will stay in motion, and an object out of motion will stay out of motion, unless met with an unbalanced force. If a force is aplied to an object in motion it either accelerates, or it will stop once met with sed unbalanced force.
They exert Gravitational Force on each other. It is a force which is directly proportional to Mass of the object
No the work done is still positive, the force exerted and the work done to exert that force is still the same. Its just that the other object is exerting more of a force on the object doing the work.
Yes. It can be simplified into applying force to an object.