A hammer is accidentally dropped from a scaffold where a crew is working. It takes the hammer 2.5 s to hit the ground. How high is the scaffold?

What happens to the Connecticut Energy of a snowball as it rolls across the lawn and gains mass?

What is the potential energy of a spring that is compressed 0.65 m by a 25 kg block if the spring constant is 95 N/m? 1.6 J 7.9 J 15 J 20 J

An athlete in the early weeks of an aerobic training program develops a decreased hemoglobin concentration but does not report disproportionate fatigue. Which of the following statements is true of the athlete's decreased hemoglobin levels? a.

Meteoroid is the term used to describe a solid particle that

Which has a higher acceleration:a 10kg object acted upon with a net force of 20N or an 18kg object acted on by a net force of 20N

Which of the following statements concerning Howard Gardner's multiple intelligences is not correct? A. Gardner is not interested in assessing levels of intelligence. B. Gardner has based his theory on research in various areas of psychology. C.

The force of attraction between two oppositely charged pith balls is 5.3 * 10-6 newtons. If the charge on the two objects is 6.7 * 10-9 coulombs, what is the distance between the two charges? (k = 9.0 * 109 newton·meter2/coulombs2)

To describe velocity you need to know?

Mohammed made a chart to list examples and nonexamples of projectile motion. Which best completes the chart? a - a football thrown in the airb - a kite flying on a stringc - a golf ball rolling off a table d - water spraying from a fountain

Halley's Comet appears around the sun about once every 76 years. It passes through the part of its orbit nearest the sun in just a few months but then moves out to great distances and takes more than half a century for the rest of its orbit.