Speed-Time Graph: Gradient = Acceleration

Drag the blue point along the graph. The red tangent shows the gradient at that instant. A steeper gradient means greater acceleration.

Acceleration at this point
a = gradient = Δspeed / Δtime
Speed at this time
v = 0 m/s
Key idea
A straight sloping speed-time graph has uniform acceleration.
Speed-time graph
Tangent / gradient
Blue point being measured
Area under graph = distance travelled
Quick Check

Is the acceleration uniform or non-uniform?