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Q. A 1348.0 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 13.6 s, then the motor stops. The rocket altitude 29.6 s after launch is 2091.0 m. You can ignore any effects of air resistance. What was the rocket's acceleration during the first 13.6 s?

Q. A certain centrifuge produces a centripetal acceleration of magnitude exactly 1210g at a point 12.3 cm from the axis of rotation. Find the number of revolutions per second.

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