P3b-changing Speed Flashcards
What does a straight line with positive gradient represent?
Increasing speed
What does straight line with negative gradient represent?
Decreasing speed
What is uniform acceleration?
Not changing acceleration
What is acceleration?
How quickly you’re speeding up
What are the units for acceleration?
M/s2
What does a horizontal line represent?
Constant speed
What does acceleration involve?
Change in
Speed
Direction
Or both
What does speeding up involve?
Acceleration
What does slowing down involve?
Deceleration
What is velocity?
Speed in a particular direction
How do you work out the velocity of two objects moving parallel to each other?
Work out the difference in their velocities
What is the difference in velocities of two objects moving in opposite direction but at the dame speed?
Identical magnitude
Opposite signs
