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Please explain and solve, thank you! 3. An object is moving in a straight line. The distance (in metres) from a fixed point is given

Please explain and solve, thank you!

3. An object is moving in a straight line. The distance (in metres) from a fixed point is given by s =-2t3 -4t2 + 6t + 4 where t 2 0. Determine the acceleration when the velocity is -2m /s. Solve

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