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In: Physics

If an arrow is shot upward on Mars with a speed of 68 m/s, its height...

If an arrow is shot upward on Mars with a speed of 68 m/s, its height in meters t seconds later is given by y = 68t − 1.86t2. (Round your answers to two decimal places.) (a) Find the average speed over the given time intervals.

Estimate the speed when t = 1.

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