Forces Flashcards
(10 cards)
What is a force?
A push or pull that can cause an object to start moving, stop, change direction, or change shape.
Unit: Newton (N)
Newton’s First Law (Law of Inertia)?
An object stays at rest or moves at constant velocity unless acted on by an external force.
Newton’s Second Law?
The force acting on an object equals mass × acceleration.
Newton’s Third Law?
For every action, there is an equal and opposite reaction.
What is net force (resultant force)?
The total force acting on an object after all forces are combined.
What is friction?
A force that resists motion between two surfaces in contact.
What is weight, and how is it different from mass?
Weight is the force due to gravity:
What happens when forces are balanced?
The object stays at rest or moves at constant velocity.
What happens when forces are unbalanced?
The object will accelerate in the direction of the net force.
What factors affect acceleration (from Newton’s Second Law)?
Force and mass — greater force = more acceleration; greater mass = less acceleration.
