CPM Homework Help : CALC Problem 11-38

Multiple Choice: A racer with a five foot head start runs with an acceleration of a(t) = 6t ft/sec². At t = 4 seconds, her velocity was 50 feet per second and she finished the race in 9 seconds. How long was the race? Homework Help ✎
1. 734 ft
2. 737 ft
3. 747 ft
4. 750 ft
5. 752 ft

Use v(4) = 50 to solve for C.

Step 2:

$d(t)=\int(3t^2+2)dt=t^3+2t+C$

Use d(0) = 5 to solve for C.

Use your equation for d(t) to evaluate d(9).