Solve the problem. Round your answer to the nearest tenth, when appropriate.A rock falls from a tower that is 400 feet high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground 
A. 10,000 sec
B. 19.6 sec
C. 20 sec
D. 5 sec
Answer: D
Mathematics
You might also like to view...
Solve the problem.A ball is thrown downward from a window in a tall building. Its position at time t in seconds is 
where s is in feet. How long (to the nearest tenth) will it take the ball to fall 227 feet?
A. 3.8 sec B. 2.7 sec C. 8.4 sec D. 2.9 sec
Mathematics
Find the exact length of the missing side of a right triangle with sides a, b, and c, where c is the hypotenuse.a = 15, c = 25
A. 24 B. 18 C. 25 D. 20
Mathematics
Find the mean.Find the mean of the following set of numbers: 4
, 1, 4
, 3
, 1
Write the answer as a mixed number.
A. 3
B. 3
C. 2
D. 3
Mathematics
Determine the quadrant in which the point is located without plotting the point.
A. Quadrant II B. Quadrant I C. Quadrant IV D. Quadrant III
Mathematics