Question

2 which two of the following are necessary for determining the velocity of an object? a direction b inertia c mass d momentum e speed

Explanation:

Velocity is a vector quantity. A vector quantity has both magnitude and direction. The magnitude of velocity is speed. So, to determine velocity, we need to know its direction (to know where the object is moving) and speed (the magnitude of how fast it is moving). Inertia is the tendency of an object to resist a change in its state of motion and is related to mass. Mass is the amount of matter in an object. Momentum (\(p = mv\)) is the product of mass and velocity, but mass alone is not sufficient to find velocity.

Answer:

A. Direction, E. Speed