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Physics, 24.10.2021 14:00 vtrvfrfvrvfvnkjrf
a car travels at a uniform speed of 30 km per hour for 30 mins and then at a uniform speed of 60 km per hour for the next 30 minutes calculate the average speed of a car
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a car travels at a uniform speed of 30 km per hour for 30 mins and then at a uniform speed of 60 km...
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