Forces and Motion
What is a force?
A push or a pull
True or False: Balanced forces cause acceleration.
What is False
What is the purpose of a system schema?
A diagram used to identify objects and the interactions (forces) between them
What is unit for the Newton (N)?
What is Kg-meter per second squared
If two forces of 10 N act on an object in opposite directions, what is the net force?
What is 0 newtons
In a system schema, how are forces between objects represented?
Labeled lines connecting objects (not arrows)
What happens to an object’s motion when the net force is zero (balanced)?
What is that the object’s speed and direction stay the same (no acceleration)
How does an object’s speed change when forces are unbalanced?
What is that the object’s speed and/or direction changes (it accelerates)
What is the difference between a system schema and a free body diagram?
A system schema shows interactions between multiple objects, while a free body diagram shows only the forces acting on one object.
What does it mean when forces on an object are unbalanced?
What is when the net force is not zero, causing the object to accelerate.
Give one real-life example of balanced forces and explain why they are balanced.
What is an object sitting still on a table
When drawing a free body diagram, which forces should be included and which should be left out?
Only the forces acting directly on the object in the system, excluding forces the object exerts on others.