A bike from rest t=0, speeds up with a constant acceleration 0f 1.54 for 6 seconds. Then with the same uniform speed for another 6 seconds when it speeds up to a constan acceleration of 2.13 until it reaches a speed of 20.0 ms. 1.How long does it take for the bike to reach 20.0 2. Whag is its total displacemen

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