Displacement or parallax.
Any change in an object's position is known as motion. It can be described in terms of speed, direction, and acceleration.
The force of attraction that exists between any two objects is called gravity.
I think this question is not phrased very well. Any force can change objects velocity (speed+direction). If fact that is the definition of the force - F=ma any force, by definition itself, can change objects velocity. Maybe you meant what force can change objects direction of motion? In that case - any force that has a different direction (not the same as direction of motion) Any force can change an object's motion.
An objects speed at any particular moment in time is known as its instantaneous velocity. This is the rate of change or the derivative of the objects position.
Motion.
Motion is change of position. but remember both must always be related to some 'datum' position or state of motion.
Inertia
The relative position of the points on any object will not change at any application of force, then it is called rigid body. The relative position of the points on any object will not change at any application of force, then it is called rigid body.
Any action that is able to change the motion of a body is called a force. Forces can cause objects to accelerate, decelerate, change direction, or deform.
Speed is the rate of movement in any direction based on change in position for a change in time. Velocity is a change in speed. It is also a change in direction while the speed does not have to change.
If any body change there position with displacement and due to the forc is called work.
Velocity.
when two bodies change their positions with time, it's termed as motion and if the motion continues it may begin to have velocity,acceleration etc
Any change in an object's position is known as motion. It can be described in terms of speed, direction, and acceleration.
The force of attraction that exists between any two objects is called gravity.
Inertia
I think this question is not phrased very well. Any force can change objects velocity (speed+direction). If fact that is the definition of the force - F=ma any force, by definition itself, can change objects velocity. Maybe you meant what force can change objects direction of motion? In that case - any force that has a different direction (not the same as direction of motion) Any force can change an object's motion.