A ball is thrown upward from the top of a 25.0-m-tall building. The ball's initial speed is 12.0 m/s. At the same instant, a person is running on the ground at a distance of 31.0 m from the building. What must be the average speed of the person if he is to catch the ball at the bottom of the building?

What are the four principles of building fitness?

The primary building block (monomer) of proteins is

What are the building blocks of mental activity?

Use the true statements below to determine whether each conclusion is true or false. Sue is a member of the swim team. When the team practices, Sue swims. The team begins practice when the pool opens. The pool opens at 8 A.M. on weekdays and at 12 noon on Saturday. Sue swims on Saturdays.

The scores for a bowling team are shown in the table given below.

Which bowler is in the $38$th percentile?

Willis Tower in Chicago is the third tallest building in the world and is topped by a high antenna. A surveyor on the ground makes the following measurement: 1. The angle of elevation from his position to the top of the building is $34^{\circ}.$ 2. The distance from his position to the top of the building is 2593 feet. 3. The distance from his position to the top of the antenna is 2743 feet. How tall is the building?

what are the building blocks of nucleic acids?

Name eight assets for building resiliency.

As part of a preliminary design study, the effects of wind loads on a 900-ft building are investigated. For the parabolic distribution of wind pressure shown in the figure, compute the force and moment reactions at the base A of the building due to the wind load. The depth of the building (perpendicular to the paper) is 200 ft.

The coach of a high school debate team must choose $4$ of the $6$ members to represent the team at a statewide competition. Each of the team members is equally qualified for the competition. Use probability concepts to describe how the coach can make his decision fairly. Describe why your method is fair.

Describe a building. Use the word $facade$.

Eco-Challenge Fiji was a competition that included jungle trekking, ocean swimming, mountain biking, and river kayaking. In 2002, the U.S. team finished second about 6 hours after the winning team from New Zealand. The U.S. team finished in about 173 hours. What was the winning team’s time?

A small building has become accidentally contaminated with radioactivity. The longest-lived material in the building is strontium-90. has an atomic mass 89.907 7 u, and its half-life is 29.1 yr. It is particularly dangerous because it substitutes for calcium in bones.) Assume the building initially contained 5.00 kg of this substance uniformly distributed throughout the building and the safe level is defined as less than 10.0 decays/min (which is small compared with background radiation). How long will the building be unsafe? $^{90} _{38} Sr$