Force And Stuff Flashcards
(25 cards)
When 2 forces act in the same direction
Net force
What is a push or a pull
Force
The force when 2 objects rub against each other
Friction
Example of rolling friction
Ball rolling on ground
Increasing pressure intentionally
Add weight
The force of gravity acting on an object
Weight
Law of Universal Gravitation
All objects attract
Amount of matter in an object
Mass
When the only force on an object is gravity
Free fall
Air resistance
forces that are in opposition to the relative motion of an object through the air.
Inertia
Tendency of an object to resist any change in its motion
Inertia is A measure of what
Matter
What happens to inertia when the objects mass increases
Increases
Explain newtons third law
There is always a reaction force
Which direction is momentum in
Which ever direction the object is moving
List Two ways to increase the momentum of an object
Increase mass and velocity
The law of conservation of momentum
Momentum same during and before collision, never lost
Which of Newton’s laws explains lifting the rocket off the ground
3rd law
What is an object the travels around another in space
A satellite
Give an example of tension and compression
Tension- rubber band
Compression- sitting on couch
What are forces equal in size, but in opposite direction
Balances forces
What would happen if gravity didn’t affect an object moving Horizontally
It would continue horizontally forever or until stopped
What is force you have to overcome to move an object
Static friction
Whenever a body is in motion there is always what to oppose it
Friction
