A brick is released with no initial speed from the roof of a building and strikes the ground in 2.40s , encountering no appreciable air drag.

How tall, in meters, is the building?

How fast is the brick moving just before it reaches the ground?



A rock is thrown vertically upward with a speed of 19.0m/s from the roof of a building that is 50.0mabove the ground. Assume free fall.

Part A

In how many seconds after being thrown does the rock strike the ground?

Part B

What is the speed of the rock just before it strikes the ground?

Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1

Atank holds 1000 gallons of water, which drains from the bottom of the tank in half an hour. the values in the table show the volume v of water remaining in the tank (in gallons) after t minutes.t(min) 5 10 15 20 25 30v(gal) 694 444 250 111 28 0(a) if p is the point (15, 250) on the graph of v, find the slopes of the secant lines pq when q is the point on the graph with t = 5, 10, 20, 25, and 30.(b) estimate the slope of the tangent line at p by averaging the slopes of two secant lines.(c) use a graph of the function to estimate the slope of the tangent line at p. (this slope represents the rate at which the water is flowing from the tank after 15 minutes.)show all steps.

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx