Newton's Laws Flashcards
What is a force?
A push or pull on an object
What is a force measured in?
Newtons (N) and Free body diagram
What are balanced forces?
Those that are equal in magnitude and going in the opposite direction. No change in motion
Does an object with a balanced force move at all?
No. Keeps moving same speed and direction. Net force is 0.
What is an unbalanced force?
Unequal forces where there is change in the velocity.
What is net force?
Sum of all the force on an object
Can balanced forces go in the same direction?
no
Only way balanced forces can go?
Opposite of each other
Which ways can unbalanced forces go?
Opposite and same direction
Unbalanced forces in different directions are …
Unbalanced forces in the same directions are…
subtracted
added
What is friction?
A force that opposes motion between two surfaces that are in motion
Three laws of motion?
Law of Inertia
Law of Acceleration
Law of action/reaction
For every action there is an..
equal but opposite reaction.
Law of inertia?
An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and direction unless acted on by another force.
Why is it important to wear seat belts?
Even though the car stops, your inertia will keep carrying you forward, so the seat belt acts as the force keeping you from flying forward.
A large mass has_______inertia because it takes a ____force to start or ____it.
More, larger, stop
What is acceleration?
An object’s change in velocity
3 ways of acceleration?
Speed up, slow down, change direction
Law of Acceleration?
Acceleration of an object is in the same direction as the net force on the object
Acceleration depends on the…?
Object’s mass and the net force action
Newton’s second law has a…
inverse relationship
If you push an object with more force…
It will accelerate more
If you push an object with less force…
It will accelerate less
It takes ____force to accelerate an object with a ___mass (and vice versa)
More, greater
Force and mass are..
directly related. one goes up/down, so does the other
Force and acceleration are..
directly related
Mass and acceleration are…
inversely related. One goes up, one goes down
Formula for F= ma problems
Force= Mass x acceleration
