a. I need to find the v(t) and a(t) of s(t)=4t^5/2 - 15t^2 +t -3 I need to know how to start...something with the displacement b.find t when the acceleration is 0
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Originally Posted by lisa1984wilson a. I need to find the v(t) and a(t) of s(t)=4t^5/2 - 15t^2 +t -3 I need to know how to start...something with the displacement b.find t when the acceleration is 0 You are given s(t) . Differentiate s(t) to find v(t) and differentiate v(t) to find a(t).
Velocity I got 10t^4-30t+1 Acceleration I got 40t^3-30 now do I have to plug the 0 in these answers or the original equation for part b. Thanks I appreciate your help!
Originally Posted by lisa1984wilson a. I need to find the v(t) and a(t) of s(t)=4t^5/2 - 15t^2 +t -3 I need to know how to start...something with the displacement b.find t when the acceleration is 0 is $\displaystyle s(t) = 4t^{\frac{5}{2}} - 15t^2 + t - 3$ or is it ... $\displaystyle s(t) = \frac{4t^5}{2} - 15t^2 + t - 3 $ ???
its the first one
Originally Posted by lisa1984wilson its the first one Velocity I got 10t^4-30t+1 Acceleration I got 40t^3-30 then your derivative, v(t) = s'(t), is incorrect ... and, as a result, a(t) is also wrong. velocity should be ... $\displaystyle v(t) = 10t^{\frac{3}{2}} - 30t + 1 $
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