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When the velocity of an object changes it is acted upon by a (n)?
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What changes speed and direction?
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.
What moment of inertia does not depend on angular velocity?
An object that is rotating at constant angular velocity will remain rotating unless it is acted upon by an external torque.
How can speed of an object change?
The speed of an object only changes if it is acted upon by another force (Newton's first law).
What is mometum?
momentum is an object's tendency to remain in motion, or to remain at rest. momentum can also be described as the product of the mass and velocity of an object. "an object at rest tends to stay at rest unless acted upon by an outside force"
What force makes things move or change?
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.
When the velocity of an object changes it is acted upon what?
Force
What changes speed and direction?
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.
What moment of inertia does not depend on angular velocity?
An object that is rotating at constant angular velocity will remain rotating unless it is acted upon by an external torque.
What changes when an unbalanced force acts upon an object?
There's no such thing as "an unbalanced force". When the entire group of forces acting on an object is unbalanced, the object accelerates, in the direction of the vector sum of the forces.
How can speed of an object change?
The speed of an object only changes if it is acted upon by another force (Newton's first law).
What two factors does acceleration depend on?
-- the magnitude and direction of the force acting on an object -- the mass of the object being forcefully acted upon
What happen if an object is acted upon by balanced forces?
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.
When speed changes does its velocity change?
When the object is acted upon by an outside force.
What laws of motion is this An object travels at a constant velocity unless it is acted upon by an outside force?
Newton's First Law of motion
What is the net force on a falling object when it reaches terminal velocity?
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.
What is the net force acting on a falling object when it reaches terminal velocity?
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.
The first law of motion discusses which principle?
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.
