Vectors and Scalars Flashcards
What is a vector?
A quantity that has both magnitude (size) and direction .
What does a scalar quantity have?
Magnitude ( size) but no direction
What are the vector quantities?
Force, velocity, acceleration
What are scalar quantities?
Mass, time, distance, speed, energy.
What is magnetism?
The force that enables compasses to work
What is friction?
The force you get when 2 materials rub together
What is compression?
The force you get when a material is being squashed
What is tension?
The force you get when a material is being stretched
What is gravity?
The force that exists between all objects and mass
What is nuclear?
The force that holds the particles in a nucleus together.
What is air resistance?
The force you get when an object moves through air.
What is electrostatic?
The force you get between two charged objects.
What is Newton’s first law?
An object stays still or keeps moving in a straight line at the same velocity unless a resultant force makes it charge.
What is Newton’s second law?
The acceleration in the direction of a resultant force depend upon the size of the force and mass of the object
What is Newton’s third law?
For every action there is an opposite and equal reaction.
Which law is this?
An asteroid tumbles through space in a straight line forever.
First
Which law is this?
You and a friend are on ice skates. You push her and you
both move in opposite directions.
Third
Which law is this?
You drop your books in the hall while running. Your books slide down the hall until they slow to a stop.
Second
How do balanced and unbalanced forces cause movement?
If resultant forces are balanced there is no movement.
If resultant forces are unbalanced there is movement.
