Solve the problem.A foul tip of a baseball is hit straight upward from a height of 4 feet with an initial velocity of 
per second. The function 
+ 4 describes the ball's height above the ground, s(t), in feet, t seconds after it was hit. The ball reaches its maximum height above the ground when the instantaneous speed reaches zero. After how many seconds does the ball reach its maximum height?
A. 160
B. 10
C. 
D. 5
Answer: D
Mathematics
You might also like to view...
Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = ?/6 to x = ?/2. The cross sections perpendicular to the x-axis are circular disks with diameters running from the curve 
to the curve 
A. (2
- 2) ? - 
B. 
- 
C. 
- 
D. (
- 1) ? + 
Mathematics
Solve.1000 ? y = 8.6574
A. 0.086574 B. 865.74 C. 0.0086574 D. 8657.4
Mathematics
Find the volume of the cylinder satisfying the given condition. Approximate values to the nearest tenth.radius = 7 yd, height = 19 yd
A. 835.24 yd3 B. 417.62 yd3 C. 2923.34 yd3 D. 11,693.36 yd3
Mathematics
Solve the problem.In four rounds of a card game, you get scores of 7, 10, -9, and 3. What is your final score?
A. 11 B. 29 C. -29 D. -11
Mathematics