Physics Flashcards
Uniform Motion
used to describe object that is traveling at a constant rate of motion in a straight line.
Distance, speed, time formula
s x t = d, d/t = s, d/s = t
What is the slope of a line on a distance-time graph equal to?
the average speed of the object
- greater slope = faster speed
- smaller slope = slower speed
Speed-time graph
- If the line is horizontal/has a slope of zero, the speed is constant
- Area under speed time graph indicates the distance it travelled
Scalar quantity
A scalar quantity has magnitude (size, “how much”) only, but no direction.
- Eg: time, mass, speed
Vector quantity
A vector quantity has both magnitude and direction.
- Eg: displacement, velocity, and force
Distance travelled
Measurement of the change in distance of an object moving from a starting reference point
Displacement
A measurement of the change in distance and the direction or the change in position of an object from a reference
Average velocity
A vector quantity has both magnitude and direction.
Acceleration
A change in velocity
Force
A push or pull on an object
Positive Acceleration
both the change in the magnitude and the direction of the velocity are positive
Negative Acceleration
the change in magnitude of the velocity is negative while the direction is positive
Acceleration formula
(V final-V initial)/time
Balanced Force
Equal in magnitude but opposite in direction.