These graphs also show if the object is moving at a constant ... the car decelerates or slows to a stop at 30 seconds. The deceleration = velocity change/time = (0 m/s – 12 m/s) ÷ 10 s ...

gradient = \(\frac{change~in~y}{change~in~x} = \frac{change~in~speed}{change~in~time} = \) \( \frac{change~in~metres~per~second}{change~in~seconds}\) = metres per ...