The diagram below shows the speed-time graph of an object.
Calculate the speed of the object at 18 seconds. Give your answer in km/h.[2]
At 80 seconds, the object starts decelerating at a rate that was twice its acceleration from 0 to 30 seconds, before coming to a stop at \(t\) seconds. Calculate the total distance travelled on the journey.[2]
Draw the distance-time graph of the object on the grid given below. You must label the values on the distance-axis clearly.[2]