Scalar
Value with only Magnitude
Ex. 5m
Vector
Value with magnitude and direction
Ex. 5m [north]
Distance
Length between 2 points (scalar)
Displacement
Measurement of change in position (vector)
D=final - initial
Position
Distance relative to a reference point (vector)
Speed
Distance over time (scalar)
Velocity
Displacement over time (vector)
Uniform motion
Constant velocity (no change in magnitude on the direction)
Acceleration
The rate of change in velocity overtime.
Velocity is changing to either speeding up or slowing down.
Range
Horizontal distance (dx)
Only horizontal
Impact velocity
Is the resultant velocity just as the projectile hits the ground
Resultant velocity or relative velocity
Is the velocity with respect to a particular reference frame or observer
Reference frame
The pov or perspective from which you consider motion.
Ex. Room, sun, earth axis
Secant line
Connects 2 points on the curve with a straight line
Tangent line
Touched the curve at exactly one point
The slope of secant line provides the…
Average velocity because it finds the total displacement.
The slope of a tangent line provides the…
Instantaneous velocity because it assumes the object will move at the rate of the tangent line for its entire motion.
Projectile motion
Airborne objects
Free falling object
A free falling object is one that moves only because of gravity. No other forces act on it. It speeds up as it falls at 9.81 m/s²
Projectile
When an object is thrown into the air, and it travels downward in response to gravity.
Maximum height
Vy
