Everything from our Physics books (term 1a-1b) Flashcards
What is newtons third law?
When two objects push or pull each other, they exert equal and opposite forces on one another.
What is friction?
Friction is a force that opposes the motion of any two surfaces in contact with each other.
What is the motive force?
The power of the engine is a motive force.
What is another word for upthrust?
Normal force
What is Hooke’s law?
Extension is directly proportional to the force applied.
MASS………………..
ALWAYS STAYS THE SAME.
Example of contact is…
Air resistance .
Example of a non-contact is…
Magnet and Gravity.
A scaler….
brings magnitude only.
A vector….
is magnitude with a direction.
What does magnitude mean?
The amount of something.
Forces that act in the same direction….
can be added together.
Forces that act opposite of each other must be….
taken away.
Forces that act vertically or horizontally….
CANNOT be added or taken away.
Moving objects have….
zero resultant force.
Stationary objects have….
non-zero resultant force.
When stretching a string it stores….
elastic potential energy.
How do you get weight?
Mass x Gravity
How do you get force?
Mass x Acceleration
Hooke’s law (formula)
Spring Constant x Extension
How do you get direction?
Speed x Time
How do you get momentum?
Mass x Velocity
What is momentum?
It’s a relationship between mass and velocity.
When hitting a stick onto a table, what happens to the energy?
It becomes sound energy.
