P5 Part 2 Flashcards
What is a vector quantity?
A quantity that has both magnitude and direction.
What is a scalar quantity?
A quantity that has only magnitude.
What is the formula for calculating velocity?
Velocity = Displacement / Time
What is Newton’s First Law of Motion?
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an external force.
What is Newton’s Second Law of Motion?
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
What is Newton’s Third Law of Motion?
For every action, there is an equal and opposite reaction.
What is terminal velocity?
The constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.
What is momentum?
The product of an object’s mass and its velocity.
What is the formula for momentum?
Momentum = Mass x Velocity
What is the law of conservation of momentum?
The total momentum of a closed system remains constant before and after a collision.
What is the difference between speed and velocity?
Speed is a scalar quantity that only has magnitude, while velocity is a vector quantity that has both magnitude and direction.
What is displacement?
The change in position of an object.
What is the formula for displacement?
Displacement = Final Position - Initial Position
What is the formula for calculating acceleration?
Acceleration = Change in Velocity / Time
What is the unit of momentum?
Kilogram meters per second (kg*m/s)
