Answer:
31.28m/s
Explanation:
We can use the third key equation of accelerated motion
Δd = viΔt+1/2aΔt^2
subtitute in the values we know
41.6 = vi(1.89)+1/2(-9.8)(1.89)^2
41.6 = vi(1.89) - 17.52
59.12 = vi(1.89)
vi = 31.28
imma need a few answer choices so i can do my research
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Using law of conservation of momentum
Ratio table of ordered pairs represent proportional relationship .
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Protons
