Velocity and acceleration Flashcards
A physical quantity that has magnitude but no direction
Scalar
Motion with no change in speed or direction
Uniform
Describes how much an objects position has changed
Displacement
The total length of a journey that an object takes
distance
Describes how fast a object is moving,but not its direction
Speed
Difference between initial time and final time
Time interval
The location of an object as seen by a observer
Position
Quantity with both magnitude and direction
Vector
Friction like force
Air resistance
9.8m/s
Acceleration due to gravity
Can be a smooth curve or a straight line
Best fit line
Allows us to picture or visualize motion
Motion diagram
Describes the speed and direction of motion
Velocity
Occurs when the speed of an object changes, or its direction of motion changes, or both
Change in velocity
Acceleration that is opposite to the direction of motion
Deceleration
The change in an objects velocity (increase or decrease) in a given period of time
Acceleration
Rate of change in position for a time interval
Average velocity
When an event occurs
Time
The rise of a graph over its run
Slope
Represented by the slope on a velocity-time graph
Average acceleration
Acceleration is measured in what unit
A) m
B) s
C) m/s
D) m/s2
D)m/s2
Velocity is measured in what unit
A) s
B) m
C)m/s2
D) m/s
D)m/s
1km = how many m
A)1
B)50
C)1000
D)100
C)1000
Define acceleration
Rate of change in velocity
Change in velocity
Final velocity minus initial velocity
Define Deceleration
Acceleration opposite the direction of motion
Acceleration due to gravity
9.8 m/s downward
Define Air resistance
Slows down an object traveling through the air
Constant acceleration
Represented by a straight line on a velocity-time graph
What does the slope of a velocity-time graph represent
Average acceleration
