#How do I find time

16 messages · Page 1 of 1 (latest)

charred pewterBOT
gleaming plaza
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this is physics related but I am really struggling to figure out how to change the formula or if I am even using the right formula

slow eagle
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well ig u could rewrite that earlier equation but its easier to start with "y-y0=v0t-0.5gt^2" where y0 is initial height, v0 is initial velocity
it comes from newtons second law F=ma when F=mg, in the case of projectile motion

gleaming plaza
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the g (or Ay) was 11.34

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so how can it be 9.81 in this question

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with the exact same numbers

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in the exact same scenario

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it just doesn't make sense to me

slow eagle
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h was also 15m?

gleaming plaza
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yes

slow eagle
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i got g=9.6m/s^2

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oh actually i approximated t to be about one half for the denominator

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if t is about one half then t squared is about one fourth, and if its in denominator you can flip and mutliply to numerator