Forces Flashcards
What’s a force?
A push or pull that acts on an object
What are the 4 basic results when u apply a force to a object?
- start an objects moving
- change an objects direction
- stop an objects motion
- change am objects shape
What’s a contact force?
Forces that can only affect an object by making contact with it
What are the types of contact forces?
- tension force
- friction force
- elastic force
What’s a friction force?
A stopping force between 2 surfaces that try to slide past one another
What’s a tension force?
A pulling force experienced by an object when:
- one end is fixed, the other is pulled
- both ends are pulled no opportune directions
What’s a elastic force?
A stretching force when an object is stretched or compressed then Returns to its original size and shape
What are the 2 catagories of forces?
Action-at-a-distance forces
Contact forces
What is a action-at-a-distance force?
Forces that can affect objects without touching it
What are they types of action-at-a-distance forces?
Gravitational force
Electrostatic force
Magnetic force
What’s a gravitational force?
An attractive force between 2 objects that have mass
- the more mass an object has the more gravity it has
- gravity also depends on distance
What is electrostatic force?
A push or pull caused by static electricity
What I’d magnetic force?
A push or pull due to natural magnetism or due to man made electromagnetism
How do u measure mass and give does it work?
Using balance
- the unknown object is places on one side and is compared to a know mass on the other
- when the 2 sides are balanced, the amount of mass used to balance them is the mass of the unknown object
What happens to a objects mass when u move it from one place to another?
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