1.2 Motion checklist

Core

Define speed as distance travelled per unit time; recall and use the equation v = s/t.
Define velocity as speed in a given direction.
Recall and use the equation: average speed = total distance travelled / total time taken.
Sketch, plot and interpret distance–time and speed–time graphs.
Determine, qualitatively, from given data or the shape of a distance–time graph or speed–time graph when an object is:(a)at rest(b)moving with constant speed(c)accelerating(d)decelerating
Calculate speed from the gradient of a straight-line section of a distance–time graph.
Calculate the area under a speed–time graph to determine the distance travelled for motion with constant speed or constant acceleration.
State that the acceleration of free fall g for an object near to the surface of the Earth is approximately constant and is approximately 9.8 m/s².

Define acceleration as change in velocity per unit time; recall and use the equation a = Δv/Δt.
Determine from given data or the shape of a speed–time graph when an object is moving with:(a)constant acceleration(b)changing acceleration
Calculate acceleration from the gradient of a speed–time graph
Know that a deceleration is a negative acceleration and use this in calculations
Describe the motion of objects falling in a uniform gravitational field with and without air/liquid resistance, including reference to terminal velocity