Forces Flashcards
What quantities are forces
Vector
How is the size of the force reprensted
By the length of an arrow
What can you maintain
A constant speed
What can be changed
Velocity can be changing all the time
When an object changes velocity what is it called
Acceleration
What is it important to know about a force
To know the direction in which it is acting in as well as how big it is
What quantity is speed
Scalar
How do you work out the resultant of two force
If the forces are acting in the same direction add them
If they are acting in opposite directions subtract them
What do force arrows show ?
Shows the direction of the force and shows the size of the force (length of the arrow )
What does the overall effect of the force arrows show
The resultant force which can be calculated by either adding or subtracting the forces
