1.2 Motion Flashcards
Define speed
The distance travelled per unit time
What is the formula for speed
speed = distance / time
Define velocity
It is speed in a given direction
Define acceleration
Change in velocity per unit time
What is the formula for acceleration
change in velocity/ change in time
What is terminal velocity
Highest velocity attained by an object falling through a fluid (gas or liquid)
In a speed time graph, how do you tell if an object is at rest
Horizontal line of x - axis
In a speed time graph, how do you tell if an object is moving with constant speed
Horizontal line above x-axis
In a speed time graph, how do you tell if an object is accelerating
Upward slope
In a speed time graph, how do you tell if an object is deccelerating
Downward slope
In a distance time graph, how do you tell if an object is at rest
Horizontal line (distance doesn’t change)
In a distance time graph, how do you tell if an object has constant speed
Straight, slanted line
In a distance time graph, how do you tell if an object is accelerating.
Curved line getting steeper
In a distance time graph, how do you tell if an object is deccelerating.
Curved line getting less steeper
In a speed time graph, what does the gradient represent
Acceleration
