The first thing I would like to help you with is recommend you buy a folder. It will help you keep your work organized and prevent catastrophes like this.
1 12.5 km/h 2 90 km/h 3 It would take about 4.5 seconds. 4 40 minutes 5 A. 0.2km/m B. 0.5km/m C. 0.3km/m faster