Free fall, Speed, Acceleration, and Velocity
Mass
how much matter something has
Quantity
how much; how many
Average speed
total distance covered/ time interval
Velocity of falling objects
v = gt
Gravity
10 m/s^2
Scalar
Measurement with only magnitude
Linear motion
Motion along a straight-line path.
free fall
Motion in which the only force acting on an object is gravity.
9.8 m/s^2
Acceleration due to gravity on Earth.
Motion
An object's change in position relative to a reference point.
displacement
An object's overall change in position.
Acceleration
Change of velocity
Formula for velocity
Displacement/ Time
Speed
Distance in a certain time
Changing velocity
If either the speed or the direction changes (or both change), then the velocity changes.
Vector
Magnitude and direciton
Negative acceleration
Slowing down
Velocity
Speed with direction
Positive acceleration
Speeding up
g
Symbol used to represent the acceleration due to gravity.
Displacement
The change in an object's position from the starting point.
80 m
The distance of an object in free fall for 4 seconds.
Free Fall
The motion of a falling object when the only force acting on it is gravity
Average Speed
The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time.
Distance
The path an object travels
Instantaneous Speed
The rate at which an object is moving at a given moment in time
Constant speed
The speed did not change; there was NO acceleration
Average Velocity
The speed of an object and a specification of its direction of motion.
0 m/s
The speed of an object in free fall at the top of its path.
30 m/s
The speed of an object in free fall for 3 seconds.
Constant velocity
The velocity did not change; there was NO acceleration
v = gt
Velocity acquired in free fall, from rest;
Formula for acceleration
Velocity/ time
Distance fallen in free fall, from rest
d = ½ gt²
