Chapter 11 Test Flashcards
What is a frame of reference
The point of which we determine the movement of an object
What is motion
A change of position relative to a frame of reference
What is the most common frame of reference
Earth
What is the difference between speed and velocity
Velocity is in a given direction
What three factors can change the velocity of an object
Change in direction, speeding up, and slowing down
What would your frame of reference beer if you’re witnessing an Earthrise
The moon
What unit do we measure velocity in
m/s and km/hr
In a distance time graph, how do you recognize constant speed
A straight line
In a distance time graph how do we know when a train has begun to decelerate
When the line curves towards the X axis
In a distance time graph what identifies the speed of an object
The slope
What is acceleration? What are its units
Rate of change in velocity. m/s/s or m/s^2
What is deceleration
A negative acceleration
On a velocity time graph, what does a horizontal lines indicate
Constant velocity
On a velocity time graph, How is constant acceleration identified
A straight line
On a velocity time graph, the slope represents what
Acceleration
