# Deck 2 = Mechanics Flashcards

Define distance?

-Distance is a measure of how far an object has traveled from the starting point or how far away it is .distance is the same as length and is measured in meters.

Define speed?

-Speed is a measure of how fast an object is moving, it is measured in meters per second written as M/S.

Define acceleration?

-Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. an object is accelerating if it is changing its velocity.

When an object is travelling at a constant speed…

-The forces are balanced.

Objects do not accelerate…

-When forces are balanced.

What is the difference between two forces being equal and two forces being balanced?

-Balanced means that there is equal force in both directions. Equal forces mean that both of the forces are exactly the same.

If an object is falling from great height what would the forces be on it?

-The object would have a high gravitational potential energy with the force of gravity and a smaller air resistance force.

What is the speed of an object if it is falling towards earth?

-The object reaches terminal velocity and will not be able to go any faster.