An outside force.
The velocity changes when an object is acted upon by unequal forces.
When the object is acted upon by an outside force.
Velocity is defined as a vector quantity representing both speed and direction. Acceleration is defined as the rate at which velocity changes. The acceleration of an object changes when it is acted upon by an unbalanced force.
the object moves at a constant velocity
In this case, it is as if no force acted on the object. The object won't acceleration; if it is resting, it will continue resting, and if it is moving, it will continue moving at the same velocity.
An object that is rotating at constant angular velocity will remain rotating unless it is acted upon by an external torque.
The speed of an object only changes if it is acted upon by another force (Newton's first law).
an object will start to move if a force is acted upon it. an object will start to move if a force is acted upon it.
Newton's First Law of motion
An object falling at terminal velocity is moving at constant speed (that's what terminal velocity means) and we will assume it is not changing direction (i.e. it is falling straight down; in reality it is more likely to be bobbing and weaving on the wind.) Constant speed and direction is another way of saying constant velocity. when an object is acted upon by a net force, it's velocity changes. So, since we know that the velocity is not changing, there is no force.
Newton's first law of motion states that an object not in motion will stay still unless acted upon by a force. Also, an object in motion will continue in motion at a constant velocity in a straight line unless acted upon by another force.
If an object's velocity changes -- if its speed increases or decreases or if its direction changes -- that means it has accelerated. For an object to accelerate, the sum of the forces acting upon it must be non-zero. So, in other words, forcechanges an object's velocity.
Answer: Greater decrease in speed due to friction. Answer: According to Newton's Second Law, such an object will accelerate, meaning that its velocity will change.
Unless an object at rest is acted upon by a force, it stays at rest due to its inertia.
If you ment to say motion it is " The velocity of a object remains constant unless the object is acted upon by an external force " As far as i am concerned there are no official laws of mention, sorry.
Newton's first law states this.
an object in motion will stay in motion unless a force is acted upon it, and an object at rest will stay in rest unless a force is acted upon it.
Inertia is not velocity, but along the same basis. Inertia is a law of physics. That which at rest will stay at rest until acted upon by an opposite motion, that which is in motion will stay in motion until acted upon by an opposite motion.
Any force, as along as its unbalanced. If the object was acted upon a balanced force its velocity would stay the same whether it was moving or not.
a body at rest will stay at rest unless acted on by an unbalanced force; also a body in motion at constant velocity will stay in motion at constant velocity unless acted on by an unbalanced force