Unit 2: Science Flashcards
Distance
The length of the whole route between two points
Displacement
Combination of distance and direction
Vector
Uses magnitude size and direction
Scalar
Has magnitude, size and NO direction
Motion
A change in position relative to the reference point
Gravity
Attraction between two or more objects
Friction
Force that opposes motion between any surfaces that are touching
Force
The interaction between two objects/masses
Speed
The distance travelled in a period of time
Static Fricton
The friction experienced when individuals try to move a stationary object on a surface
Rolling Friction
Acting on an object when rolling over a surface
Sliding Friction
Acting on an object when sliding over a surface
Fluid Friction
Acting on an object when moving through fluid
Acceleration
A change in speed or direction
Net Force
The total of all frictional forces
Balanced Forces
Equal in magnitude
Opposite in direction
Equal to 0
UnBalanced Forces
When total of all forces on an object are not equal to 0
Example of Vector Quantities:
Gravity/Velocity
Example of Scalar Quantities:
Mass/Speed
On a velocity vs time graph, the slope of the line tells you
Rate of Aceleration
On a position vs time graph the slope of the line tells you
The Velocity
If an object is accelerating the forces on it are
Unbalanced
