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Math - check answer

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Given s = 10 - 10t2 + 45t3, determine the velocity when t = 1 s.

velocity in m/s =

My Answer
S'= 0-20t + 135t^2
S'(1) = -20+135 = 115


velocity in m/s = 115

Can you please confirm this is correct.

Thanks!

  • Math - check answer -

    S = 10 - 10t^2 + 45t^3.
    S = 10 - 10*1 = 45*1 = 45 s.

    NOTE: 1^2 = 1*1 = 1.
    1^3 = 1*1*1 = 1.

  • Math - check answer -

    OOPS! I didn't realize you were doing calculus.

    Your calculus is correct.

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