Can you also explain how you\'ve got the answer? MCAT Prep: Pilobolus Spore Laun

Question

Can you also explain how you've got the answer?

MCAT Prep: Pilobolus Spore Launch Pilobolus is a genus of fungi commonly found on dung and known for launching its spores a large distance for a sporangiophore only 1 cm tall. To achieve this, Pilobolus accelerates its spores (m-108 kg) to 7.0 m/s in 2.0 s. For calculations, use g-10 m/s2 Source: Yafetto L, Carroll L, Cui Y, Davis D.J, Fischer MWF, et al. 2008 The Fastest Flights in Nature: High-Speed Spore Discharge Mechanisms among Fungi. PLOS ONE 3(9). 1. If the spores are shot out horizontally at the maximum speed, how far away from the fungi do they land? Neglect air resistance 10.0 m 5.0 m 0 m 1.0 m

Explanation / Answer

Maximum speed (u) = 7 m/s

If projected at 45° then range will be maximum so that maximum range (R) = u²/g = 7²/10 = 4.9 m

So for any other angle range will be less than 4.9 m

So correct answer will be 1 m.

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