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In order for an object to travel with constant velocity the sum of forces acting on it must be 0 N. According, to Newton's second law,
ΣF = ma
where
ΣF is the sum of forces
m is mass
a is acceleration
If the acceleration is not 0, then the object is not traveling at a constant velocity. In order for a to equal 0, the sum of forces must be 0 because by solving Newton's second law for a, we get
a=ΣF/m
If ΣF is not 0, then that equation will never allow a to equal 0 and the object will b accelerating. Therefore, the sum of forces must equal 0 for an object to travel with constant velocity.
Wiki User
∙ 13y ago
Wiki User
∙ 8y agoVelocity, as the term is used in physics, is a vector; that means you need to know:* The speed, and the direction, or alternatively:
* The x-component and the y-component of the velocity (as well as the z-component, if you are considering 3-dimensional space).
Wiki User
∙ 15y agoYour question is incomplete. It's like asking how fast must a marble be.
Wiki User
∙ 13y agoAnother object or force of equal velocity or greater pushing against it.
Wiki User
∙ 8y agoits speed and its direction
Wiki User
∙ 12y agodirection
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Rate of change of the velocity of an object?
The change in velocity is just the change in velocity. The RATE of change of velocity - how quickly velocity changes - is usually called "acceleration".
What 2 ways causes an object's velocity to change?
If an object's speed changes, or it heads off in a new direction, its velocity has changed. Because of friction and gravity 1. acceleration 2. deceleration 3. change of direction
Is displacement the change in velocity of an object?
Velocity is change in displacement over time.
What is a force that can cause an object to change its speed and direction?
A basic physics answer for this is that a net force (or unbalanced force) will cause an object to accelerate, that is, cause the object to change its speed and/or direction.
What will change if a force pushes an object in the same direction as the object's motion?
It will cause acceleration, and increase its velocity.
What is something that changes motion in an object?
A force is required to change an object's velocity.
Rate of change of the velocity of an object?
The change in velocity is just the change in velocity. The RATE of change of velocity - how quickly velocity changes - is usually called "acceleration".
How does a change in mass affects the accelaration of an object?
Force = Mass * Acceleration (F = m * a)Therefore, if the mass of an object is increased, then the force required to accelerate to a given velocity will be greater. If the mass is decreased, then the force required to accelerate that object to a given velocity will become smaller.
Can the object be in motion if the net force acting on it is zero?
Yes. No force is required to keep moving - a force is required, however, to change the velocity.
What is change in the speed of an object?
A change in the velocity is produced by a force acting on the object. A change in velocity means a change in speed or direction (or both).
How does inertia work?
It is exactly the same as momentum and covered by Newton's first law of motion. Inertia is a way of expressing the force required to get an object to move from rest, or the force required to change the velocity or direction of an object in motion. Anything that has mass will have inertia - a "resistance to move or change velocity or direction of motion".
The change in an object velocity?
a change in a objects velocity is caused by a unbalanced force :)
What indicates the acceleration of an object?
Velocity. A change in VELOCITY will always indicate the acceleration of an object.
How can you measure when an object has reached terminal velocity?
the terminal velocity is the total speed that its take an object to reach the point it required from the initial velocity
When velocity may change?
Velocity can only change if the object experiences an acceleration. Acceleration can only change if either the Force on the object increases, or the Mass of the object decreases.
Can acceleration and velocity be the same?
No. Velocity is the change of location and accelarion is any change that occurs to the velocity of an object.
Is there an acceleration when an object traveling at constant velocity and why?
No. Acceleration is change of velocity / time. If there is no change in velocity, there is no acceleration.
