Physics, asked by shaheersafdar488, 9 hours ago

A particle that is moving along a straight line decelerates uniformly from 40 cm/s to 20 cm/s in 5.0 s and then has a constant acceleration of 20 cm/s2 during the next 4.0 s. The average speed over the whole time interval is

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Answered by nandanchanda210

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Answer:

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