Answer to Question #55823 in Calculus for Box Cars

Question

4: A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 120 feet per second. What is the maximum height, in feet, the ball will attain?

Round to the nearest whole foot. Answer: _____

5: A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height?

Round to the nearest hundredth. Answer: ____

6: The finishing time for a runner completing the 200-meter dash is affected by the tail-wind speed, s . The change, t, in a runner's performance is modeled by the function shown below:

t = 0.0119s^2 – 0.308s – 0.0003

Predict the change in a runner's finishing time with a wind speed of 5 meters/second. Note: A negative answer means the runner finishes with a lower time.

Round to the nearest hundredths. Answer: ____