My calculator models the function as
.. h(t) = -4.9t^2 +23.4t +120
The maximum height is reached at t=-23.4/(2(-4.9)) ≈ 2.39 seconds.
.. h(t) = -4.9t^2 +23.4t +120
The maximum height is reached at t=-23.4/(2(-4.9)) ≈ 2.39 seconds.
A parachutist's speed during a free fall reaches
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