Namio3407 Namio3407

07-06-2023
Mathematics

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The speed (mph) and the stopping distance (ft) of a travelling car are given as follows.
Speed 20 30 40 50 60 70
Distance 54 90 138 206 292 396
Fit a parabolic curve: D = a + bS + cS2. Estimate the value of D when S=45 miles per hr

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