What is speed?
Distance travelled per unit time.
What is the equation for speed?
Speed = distance ÷ time.
What are the units of speed?
metres per second (m/s).
What is velocity?
Speed in a given direction.
What is acceleration?
The rate of change of velocity.
What is the equation for acceleration?
Acceleration = change in velocity ÷ time.
What does acceleration mean?
Speeding up, slowing down, or changing direction.
What is deceleration?
Negative acceleration (slowing down).
What is a distance-time graph used for?
Showing how distance changes with time.
What does a straight line on a distance-time graph mean?
Constant speed.
What does a flat line on a distance-time graph mean?
The object is stationary.
What does a steeper slope on a distance-time graph mean?
Faster speed.
What does the gradient of a distance-time graph represent?
Speed.
What is a velocity-time graph used for?
Showing how velocity changes over time.
What does a straight sloping line on a velocity-time graph mean?
Constant acceleration.
What does a flat line on a velocity-time graph mean?
Constant velocity.
What does a downward slope on a velocity-time graph mean?
Deceleration.
What does the gradient of a velocity-time graph represent?
Acceleration.
What does the area under a velocity-time graph represent?
Distance travelled.
What is reaction time?
The time taken to respond to a stimulus.
What affects reaction time?
Tiredness, alcohol, drugs, distractions.
What is thinking distance?
Distance travelled during reaction time.
What is braking distance?
Distance travelled while braking.
What is stopping distance equation?
Thinking distance + braking distance.
