When the object is at rest, the acceleration is zero. so the net total force acting on the body from all directions should be zero. when the object is moving with constant velocity, the acceleration is zero, so in this case too, after the motion is started, the force on the body should be zero. when the velocity is increasing, some acceleration is present, so some force should be present in the direction of the motion.
These are the various cases which can be explained by the equation:
Force = Mass * Acceleration.
here the mass remains constant, so acceleration depends on the net force
Inertia describes the tendency for objects to resist changes in their motion. This means that objects will remain at rest or in motion at a constant velocity unless acted upon by an external force.
A change in an objects velocity is called acceleration. Velocity is defined as an objects speed of travel AND its direction of travel. Acceleration can change only an objects speed, only its direction or both. If there is no acceleration acting on the object, then the velocity remains constant.
No, not all moving objects have a natural tendency to slow down and stop. Objects in motion will continue moving at a constant velocity unless acted upon by an external force, such as friction or air resistance.
Motionless objects and objects moving in a straight line with constant speed both have a constant velocity of zero or a constant velocity in a single direction, respectively. They share the characteristic of having a consistent position relative to a reference point over time.
Objects moving in uniform circular motion will have a constant speed, and two objects with the same acceleration have a constant velocity.
Inertia
Inertia describes the tendency for objects to resist changes in their motion. This means that objects will remain at rest or in motion at a constant velocity unless acted upon by an external force.
A change in an objects velocity is called acceleration. Velocity is defined as an objects speed of travel AND its direction of travel. Acceleration can change only an objects speed, only its direction or both. If there is no acceleration acting on the object, then the velocity remains constant.
The normal tendency of objects - when no force acts on them - is to move in a straight line, at a constant speed and direction (that is, a constant velocity). However, when there is a force, an object's velocity may be changed. That's what happens to the Moon, as well as to other objects in some orbit. In this case, the force is provided by gravitational attraction from Earth.
No, not all moving objects have a natural tendency to slow down and stop. Objects in motion will continue moving at a constant velocity unless acted upon by an external force, such as friction or air resistance.
Motionless objects and objects moving in a straight line with constant speed both have a constant velocity of zero or a constant velocity in a single direction, respectively. They share the characteristic of having a consistent position relative to a reference point over time.
Objects moving in uniform circular motion will have a constant speed, and two objects with the same acceleration have a constant velocity.
Objects would move with constant velocity or stay at rest.
The quality you are referring to is inertia. Inertia is the tendency of an object to resist changes in its velocity, whether that means staying still or continuing to move at a constant speed in a straight line.
The first law comes closest. Objects have a tendency not to change their velocity.
The tendency of an object to maintain its state of motion (either at rest or moving at a constant velocity) is known as inertia. This property causes objects to resist changes in their motion unless acted upon by an external force.
When acceleration is zero, then the object is moving in a straight line with constant speed. (That's the effective meaning of constant velocity.)