An object in motion tends to keep moving in a straight line at a constant speed,
unless an external force acts on it to change its direction or speed.
Force
Inertia,
Inertia is the tendency of an object to resist changes in its motion. Objects at rest tend to stay at rest, and objects in motion tend to stay in motion unless acted upon by an external force. This means that the more mass an object has, the more inertia it has, and the harder it is to change its motion.
An object in motion will tend to stay in motion unless acted upon by an outside force.
The tendency of a moving object to continue moving in a straight line is known as inertia. According to Newton's first law of motion, an object will remain in its state of motion unless acted upon by an external force.
This is described by Newton's first law of motion: an object will remain in its current state of motion (either at rest or moving at a constant speed) unless acted upon by an external force. In other words, objects have inertia, meaning they resist changes in their motion.
Objects tend to resist changes in motion due to inertia, which is the tendency of an object to maintain its current state of motion. The greater the mass of an object, the greater its inertia and resistance to changes in motion. This resistance is why objects require a force to accelerate, decelerate, or change direction.
it is force which can slow down or stop motion
The force that tends to slow an object in motion is typically friction. Friction arises between the object and the surface it is moving on, creating a resistance that opposes the motion and gradually reduces the object's speed. Other factors such as air resistance and drag can also contribute to slowing an object in motion.
An object's resistance to change in motion is dependent solely on its inertia, which is determined by its mass. This property is described by Newton's first law of motion, which states that objects in motion tend to stay in motion at a constant velocity and objects at rest tend to stay at rest unless acted upon by an external force.
Inertia guarantees that an object at rest will remain at rest and an object in motion will remain in that same motion, so long as there is no external force acting on that object. Alternately, there could be force acting on it as long as that force adds up to zero.
Inertia is the quality that makes objects tend to keep moving. Inertia is the tendency of an object to resist changes in its motion, whether that motion is at rest or in motion.