Force - Science Flashcards
(16 cards)
Reference Point
POV - where motion is being viewed
Static Friction
An object at rest + is harder to overcome
Kinetic Friction
An object in motion
Balanced Forces - how do they affect motion?
causes an object to be at rest / have a constant rate
Unbalanced Forces - how do they affect motion?
cause an object to accelerate / decelerate
Force
anything that causes change in motion
Forces are a vector so they have…
magnitude and direction
Contact Forces
Forces that occur when two or more object physically touch
non-contact forces
when two or more objects do not physically touch
An object’s resistance to change in motion is called…
inertia
Newton’s 1st Law
an object at rest will stay at rest unless acted on by an outside force; the opposite is also true
Newton’s 2nd Law
to move a mass, you need a force
Newton’s 3rd Law
for every action there is an equal and opposite reaction
Net Force
sum of force and direction
What is the action/reaction pair of a swimmer pushing off a wall?
- wall pushing off feet
- feet pushing off wall
Force Vectors
-fnorm
-fgrav
-fapp
-ftens
-ffrict
-fair
-fspring
