1. During a time interval of 90 minutes, a car a) Runs at 50km/hr for the first 20 min b)accelerates uniformly to 90kmh for the next 10min C) Runs at the speed of 90 km/h in the next 40min, and d) Decelerates uniformly to a stop in the remaining 20 min calculate a) acceleration b) deceleration, and c) average speed during entire period.
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Answer:
bro I don't know sorry I want points only
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Explanation:
a)runs at 50km/hr for the first 20 min
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