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𝑎(𝑡)=8.7𝑡2+6,where 𝑡 is measured in seconds.1. Write an equation for the velocity 𝑣 at time 𝑡. Simplify your answer.𝑣(𝑡)=

Question

𝑎(𝑡)=8.7𝑡2+6,where 𝑡 is measured in seconds.1. Write an equation for the velocity 𝑣 at time 𝑡. Simplify your answer.𝑣(𝑡)=

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Solution

To find the velocity v(t) v(t) at time t t given the acceleration a(t)=8.7t2+6 a(t) = 8.7t^2 + 6 , we need to integrate the acceleration function with respect to time. Here are the steps:

  1. Write down the given acceleration function: a(t)=8.7t2+6 a(t) = 8.7t^2 + 6

  2. Recall that velocity is the integral of acceleration: v(t)=a(t)dt v(t) = \int a(t) \, dt

  3. Set up the integral: v(t)=(8.7t2+6)dt v(t) = \int (8.7t^2 + 6) \, dt

  4. Integrate each term separately:

    • The integral of 8.7t2 8.7t^2 with respect to t t is: 8.7t2dt=8.7t2dt=8.7(t33)=2.9t3 \int 8.7t^2 \, dt = 8.7 \int t^2 \, dt = 8.7 \left( \frac{t^3}{3} \right) = 2.9t^3
    • The integral of 6 6 with respect to t t is: 6dt=6t \int 6 \, dt = 6t
  5. Combine the results and add the constant of integration C C : v(t)=2.9t3+6t+C v(t) = 2.9t^3 + 6t + C

So, the equation for the velocity v(t) v(t) at time t t is: v(t)=2.9t3+6t+C v(t) = 2.9t^3 + 6t + C

Here, C C is the constant of integration, which can be determined if an initial condition (such as the initial velocity) is provided.

This problem has been solved

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