Acceleration and Velocity Flashcards
What is the difference between a scalar and a vector
A vector is a quantity with both magnitude and direction. A scalar is a number without any directon.
List 4 Scalars
Volume, mass, time, and temperature
Acceleration due to gravity
the acceleration of a freely falling object under the influence of earth’s gravity (9.8 m/s^2)
average acceleration
An object’s change in velocity during some measurable time interval divided by the time interval
List 4 vectors
Velocity, momentum, force, speed, and displacement
free fall
the motion of an object due only to the effect of gravity
What is the equation to find velocity?
d/t
What are the equations used to solve for acceleration?
a = vf - vi / t
instantaneous acceleration
change in an object’s velocity at an instant of time
velocity time graph
velocity is plotted on the vertical axis and time is plotted on the horizontal axis
What are the units used for velocity, distance, time and acceleration
Velocity: m/s
acceleration: m/s squared
time: seconds
distance: meters
Displacement
a change in position
Define position-time graph
In which the time data is plotted on the x-axis and the position data is plotted on the y-axis
particle model
you replace the object or objects with single points
Define average velocity
Average velocity is the ratio of an object’s change in position to the time interval during which the change occurred
an object’s velocity is how fast it is moving and _____
in what direction it is moving
the average speed is ___
the absolute value of the average velocity
The rate at which an object’s velocity changes is its _____
acceleration
The acceleration due to gravity on earth is _____
9.8m/s squared
a series of points that depicts an object in motion is a ____
motion diagram
Which of the following results in the largest acceleration?
A large change in velocity over a short time interval
position time graph
a graph with time data on the x axis and position on the y axis
What is the purpose of drawing a motion diagram?
A motion diagram represents the motion of an object by displaying its location at various equally spaced times on the same diagram and provide a visual aid to the problem for a better understanding