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I'm looking for the derivative of the projectile parametric y-component?

The y component is:

y = (vi/k)(1-e^-kt)(sin a) + (g/k^2)(1 - kt - e^-kt)

I seem to be doing something wrong and my derivative isnt working out, I just want to check it against the final answer to see where I am going wrong.

Thanks

Matt

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# Derivative of projectile parametric y-component?

**Physics Forums | Science Articles, Homework Help, Discussion**