Q: When To state the velocity of an object you need to know the objects?

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The mass of the object.

Velocity is equal to distance divided by time.

velocity

velocity

Velocity includes speed and direction.

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when you know both speed and direction of an objects motion you know the velocity of an object.

The distance it travels in a caertain amount of time as well as the direction

The mass of the object.

Calculate the average velocity for the objects.

You know a force has acted on the object because the objects velocity has changed as the result of a force, f= mdv/dt.

The magnitude of inertia of an object is we consider the velocity and mass.The object that has least inertia is object that has small mass and velocity.This because the small mass and velocity the easiest it to stop or stop it.As we know that inertia is the tendency of object to remain its state in rest or in uniform velocity in straight line.Small massan velocity of object the small tendency of object to remain it state in rest or in uniform velocity in straight line.

The magnitude and direction of the object's velocity vector.

When you have calculated or measured it.

You need to know the coefficient of static friction and the coefficient of moving friction for both objects. The solution involves solving a differential equation so the math is non-trivial.

velocity of the object

object's velocity

To know an object's velocity, you need to know its speed and direction. You can measure speed by calculating how long an object takes to arrive at a new position. So by knowing an object's starting position, ending position, and the time it took to get there, you can calculate its average velocity. In a more advanced calculation, you could choose starting and ending positions that are extremely close to one another and calculate "instantaneous velocity." Velocity is known as a "vector value". A vector not only has a length, but a direction. In this case, "length" is the same as "speed", and direction is its change in position.