To qualify for the finals in a racing event, a race car must achieve an average speed of 250 km/h on a track with a total length of 1 600 m. of 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

Question

Physics

Shiloh

23 December, 16:13

To qualify for the finals in a racing event, a race car must achieve an average speed of 250 km/h on a track with a total length of 1 600 m. of 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

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The minimum average speed in the second half of the track should be 270 km/hr

The average speed required during the second half is calculated as

250 = (230+x) / 2

x=270 km/hr

Therefore the average spped required by the car during the second half is 270 km/hr