SOLUTION: In order to qualify for the finals in a racing
event, a race car must achieve an average
speed of 262 km/h on a track with a total
length of 1700 m.
If a particular car covers
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event, a race car must achieve an average
speed of 262 km/h on a track with a total
length of 1700 m.
If a particular car covers
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Question 1165417: In order to qualify for the finals in a racing
event, a race car must achieve an average
speed of 262 km/h on a track with a total
length of 1700 m.
If a particular car covers the first half of the
track at an average speed of 228 km/h, what
minimum average speed must it have in the
second half of the event in order to qualify?
Answer in units of km/h. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! 262 km/h is 262000 m/h or 72.7778 m/sec
to go 1700 m requires 23.3588 sec.
at 228 km/h or 228000 m/h or 63.3333 m/sec, the car took 13.4211 sec to go 850 m, half the distance.
There are 9.9377 sec left to go 850 m.
That is 85.532 m/sec or 307.92 or 308 km/h (must round up regardless of the decimal quantity when a minimum qualifying time is present.)
