A particle travels along the x-axis such that its velocity is given by v(t)=(t0.7+t)cos(2t). If the position of the particle is x=−2 when t=2.5 what is the position of the particle when t=1 ? You may use a calculator and round your answer to the nearest thousandth.Answer:
Q. A particle travels along the x-axis such that its velocity is given by v(t)=(t0.7+t)cos(2t). If the position of the particle is x=−2 when t=2.5 what is the position of the particle when t=1 ? You may use a calculator and round your answer to the nearest thousandth.Answer:
Integrate velocity function: To find the position of the particle at t=1, we need to integrate the velocity function from t=1 to t=2.5 and then add this to the initial position at t=2.5. The velocity function is v(t)=(t0.7+t)cos(2t). We will integrate this function from t=1 to t=2.5.
Set up integral: First, we set up the integral of the velocity function to find the change in position (Δx) from t=1 to t=2.5: Δx=∫t=1t=2.5(t0.7+t)cos(2t)dt This integral will give us the displacement of the particle from t=1 to t=2.5.
Evaluate integral: Using a calculator, we evaluate the integral:\Delta x \approx \int_{t=\(1\)}^{t=\(2\).\(5\)} (t^{\(0\).\(7\)} + t)\cos(\(2t) \, dt \approx [Integral value from calculator]
Find position at t=1: Once we have the value of Δx, we can find the position at t=1 by subtracting Δx from the position at t=2.5, since we are moving backward in time from t=2.5 to t=1. x(1)=x(2.5)−Δx Given that x(2.5)=−2, we substitute this value into the equation.
Calculate position at t=1: Now we calculate the position at t=1 using the values we have: x(1)=−2−[Integral value from calculator]
Round final answer: After performing the calculation with the integral value, we round the answer to the nearest thousandth as instructed.x(1)≈ [Calculated position rounded to the nearest thousandth]
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