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Multiple Choice
The velocity (mi/) of a drone flying in the air is given by v(t)=12+4t2 for 0≤t≤4 hours. Let s(0)=0. How far has the drone traveled by the time it has reached /?
A
24 mi
B
34.7 mi
C
48 mi
D
72 mi
Verified step by step guidance
1
Step 1: Understand the problem. The velocity of the drone is given as v(t) = 12 + 4t^2 (in mi/hr), and we are tasked with finding the distance traveled by the drone when its velocity reaches 48 mi/hr. The initial position is s(0) = 0.
Step 2: Solve for the time t when the velocity v(t) equals 48 mi/hr. Set v(t) = 48 and solve the equation 12 + 4t^2 = 48 for t.
Step 3: Once t is determined, use the formula for displacement, which is the integral of velocity over time. The displacement s(t) is given by s(t) = ∫ v(t) dt. Substitute v(t) = 12 + 4t^2 into the integral.
Step 4: Evaluate the definite integral of v(t) from t = 0 to the value of t found in Step 2. This will give the total distance traveled by the drone.
Step 5: Add the initial condition s(0) = 0 to the result of the integral to find the total distance traveled. This will give the final answer.