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[" 9.The position of an object moving al...

[" 9.The position of an object moving along "x" -axis is given by "],[x=a+bt^(2)" where "a=8.5m" and "b=2.5ms^(-2)" and "t" is "],[" measured in seconds.Its velocity at "t=2s" and the average "],[" velocity between "t=2s" and "4s" is "],[[" (a) "2ms^(-1),5ms^(-1)," (b) "5ms^(-1),10ms^(-1)],[" (c) "10ms^(-1),15ms^(-1)," (d) "10ms^(-1),20ms^(-1)]]

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The position of an object moving along x -axis is given by x=a+bt^(2) where a=8.5m,b=2.5ms^(-2) and t is measured in seconds.What is its velocity at t=0s and t=2.0s. What is the average velocity between t=2.0s and t=4.0s?

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