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Suppose you are driving a car along a straight road. Your velocity at any time t (in seconds) is given by the function v(t)=3t^(2)-2t+5 meters per second. Find the total distance traveled by the car from t=0 to t=3 seconds.

Suppose you are driving a car along a straight road. Your velocity at any time t t (in seconds) is given by the function v(t)=3t22t+5 v(t)=3 t^{2}-2 t+5 meters per second. Find the total distance traveled by the car from t=0 t=0 to t=3 t=3 seconds.

Full solution

Q. Suppose you are driving a car along a straight road. Your velocity at any time t t (in seconds) is given by the function v(t)=3t22t+5 v(t)=3 t^{2}-2 t+5 meters per second. Find the total distance traveled by the car from t=0 t=0 to t=3 t=3 seconds.
  1. Understand the problem: Understand the problem and set up the integral. We are given the velocity function v(t)=3t22t+5v(t) = 3t^2 - 2t + 5, and we need to find the total distance traveled from t=0t=0 to t=3t=3 seconds. To find the distance, we need to integrate the velocity function over the given time interval.
  2. Write integral: Write down the integral that represents the total distance traveled.\newlineThe total distance traveled, DD, is the integral of the velocity function from t=0t=0 to t=3t=3:\newlineD=03(3t22t+5)dtD = \int_{0}^{3} (3t^2 - 2t + 5) \, dt
  3. Calculate integral: Calculate the integral.\newlineTo find the distance, we need to find the antiderivative of the velocity function and evaluate it from t=0t=0 to t=3t=3.\newlineThe antiderivative of 3t23t^2 is t3t^3, the antiderivative of 2t-2t is t2-t^2, and the antiderivative of 55 is 5t5t. So the integral becomes:\newlineD=[t3t2+5t]D = [t^3 - t^2 + 5t] from 00 to t=3t=300
  4. Evaluate limits: Evaluate the antiderivative at the upper and lower limits of the integral.\newlineD=[3332+5(3)][0302+5(0)]D = [3^3 - 3^2 + 5(3)] - [0^3 - 0^2 + 5(0)]\newlineD=[279+15][00+0]D = [27 - 9 + 15] - [0 - 0 + 0]\newlineD=[279+15]0D = [27 - 9 + 15] - 0\newlineD=279+15D = 27 - 9 + 15\newlineD=33D = 33 meters

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