2 A motorway has a speed limit of 120 km/h. A speed camera will take two photos to track how long it takes a vehicle to cover a set distance on the road. By calculating the speed of the following cars (A–C) in km/h, which car(s), if any, is/are breaking the speed limit? Show your calculations.
Car A: 28 m in 0.8 s
Car B: 28 m in 1.0 s
Car C: 28 m in 1.6 s
3 The distance–time graphs of four objects (A–D) are shown below. a. Which object had the fastest average speed? b. Which object reached the highest speed?