find the total time needed to qualify ... 1.6 km / 250 kph
find the first half time ... 0.80 km / 230 kph
subtract to find the time needed for the 2nd half
calculate the speed necessary for the 2nd half ... 0.80 km / (time needed)
To qualify for the finals in a racing vent, a race car must achieve an average speed of 250 km/h on a track with a total length of 1,600 m. If a particular car covers the first half of the track at an average speed of 230 km/h, what minimum average speed must it have in the second half of the event in order to qualify?
1 answer
1 answer