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Q. During a workout, the football players ran up the stadium stairs in 61 s. The stairs are 130 m long and inclined at an angle of 40°. If a typical player has a mass of 115 kg, estimate the average power output on the way up. Ignore friction and air resistance.

Q. A speedboat moving at 39.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.15 m/s2 by reducing the throttle.

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