Mathematics for IGCSE & O level - Graphs In Practical Situations (Section 5 - No. 14)

How do you find the deceleration value on a speed-time graph?

Calculate the area under the curve.

Find the gradient of the downward-sloping part.

Find the gradient of the upward-sloping part.

Determine the y-intercept

Deceleration is found by calculating the negative gradient.