The diagram below show the speed-time graph of an object. Calculate the speed of the object at \(18\

Question

The diagram below show the speed-time graph of an object. Calculate the speed of the object at $18$ seconds. Give your answers in km/h. 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. Draw the distance-time graph of the object on the grid given below. You must label the values on the distance-axis clearly.

Accepted Answer

(a) $38.88$ km/h (b) $1305$ m

(E Math) 2025 CCHY P1 Q14

(E Math) 2025 CCHY P1 Q14